Written Instructions:
For each Multiple Choice Question (MCQ), four options are given. One of them is the correct answer. Make your choice (1,2,3 or 4). Write your answers in the brackets provided..
For each Short Answer Question(SAQ) and Long Answer Question(LAQ), write your answers in the blanks provided.
Leave your answers in the simplest form or correct to two decimal places.
| 1) Draw concentric circles for the following measurements of radii. Find the width of each circular ring. 7cm and 11cm.
Answer:_______________ |
| 2) Draw concentric circles for the following measurements of radii. Find the width of each circular ring. 4cm and 8cm.
Answer:_______________ |
| 3) Draw concentric circles for the following measurements of radii. Find the width of each circular ring. 8cm and 8cm.
Answer:_______________ |
| 4) Draw concentric circles for the following measurements of radii. Find the width of each circular ring. 10cm and 9cm.
Answer:_______________ |
| 5) Draw concentric circles for the following measurements of radii. Find the width of each circular ring. 5cm and 9cm.
Answer:_______________ |
| 6) Draw concentric circles for the following measurements of radii. Find the width of each circular ring. 5cm and 8cm.
Answer:_______________ |
| 7) Draw concentric circles for the following measurements of radii. Find the width of each circular ring. 4cm and 9cm.
Answer:_______________ |
| 8) Draw concentric circles for the following measurements of radii. Find the width of each circular ring. 9cm and 9cm.
Answer:_______________ |
| 9) Draw concentric circles for the following measurements of radii. Find the width of each circular ring. 10cm and 10cm.
Answer:_______________ |
| 10) Draw concentric circles for the following measurements of radii. Find the width of each circular ring. 6cm and 8cm.
Answer:_______________ |
| 1) Draw concentric circles for the following measurements of radii. Find the width of each circular ring. 7cm and 11cm. Answer: 4 SOLUTION 1 : Draw a rough diagram and mark the given measurements. Take any point O and mark it as the centre. With O as centre draw a circle of radius OA = 7cm. WIth O as centre draw a circle of radius OB = 11cm. Thus the concentric circles are drawn. Width of the circular ring = OB - OA = 11 - 7 = 4 |
| 2) Draw concentric circles for the following measurements of radii. Find the width of each circular ring. 4cm and 8cm. Answer: 4 SOLUTION 1 : Draw a rough diagram and mark the given measurements. Take any point O and mark it as the centre. With O as centre draw a circle of radius OA = 4cm. WIth O as centre draw a circle of radius OB = 8cm. Thus the concentric circles are drawn. Width of the circular ring = OB - OA = 8 - 4 = 4 |
| 3) Draw concentric circles for the following measurements of radii. Find the width of each circular ring. 8cm and 8cm. Answer: 0 SOLUTION 1 : Draw a rough diagram and mark the given measurements. Take any point O and mark it as the centre. With O as centre draw a circle of radius OA = 8cm. WIth O as centre draw a circle of radius OB = 8cm. Thus the concentric circles are drawn. Width of the circular ring = OB - OA = 8 - 8 = 0 |
| 4) Draw concentric circles for the following measurements of radii. Find the width of each circular ring. 10cm and 9cm. Answer: -1 SOLUTION 1 : Draw a rough diagram and mark the given measurements. Take any point O and mark it as the centre. With O as centre draw a circle of radius OA = 10cm. WIth O as centre draw a circle of radius OB = 9cm. Thus the concentric circles are drawn. Width of the circular ring = OB - OA = 9 - 10 = -1 |
| 5) Draw concentric circles for the following measurements of radii. Find the width of each circular ring. 5cm and 9cm. Answer: 4 SOLUTION 1 : Draw a rough diagram and mark the given measurements. Take any point O and mark it as the centre. With O as centre draw a circle of radius OA = 5cm. WIth O as centre draw a circle of radius OB = 9cm. Thus the concentric circles are drawn. Width of the circular ring = OB - OA = 9 - 5 = 4 |
| 6) Draw concentric circles for the following measurements of radii. Find the width of each circular ring. 5cm and 8cm. Answer: 3 SOLUTION 1 : Draw a rough diagram and mark the given measurements. Take any point O and mark it as the centre. With O as centre draw a circle of radius OA = 5cm. WIth O as centre draw a circle of radius OB = 8cm. Thus the concentric circles are drawn. Width of the circular ring = OB - OA = 8 - 5 = 3 |
| 7) Draw concentric circles for the following measurements of radii. Find the width of each circular ring. 4cm and 9cm. Answer: 5 SOLUTION 1 : Draw a rough diagram and mark the given measurements. Take any point O and mark it as the centre. With O as centre draw a circle of radius OA = 4cm. WIth O as centre draw a circle of radius OB = 9cm. Thus the concentric circles are drawn. Width of the circular ring = OB - OA = 9 - 4 = 5 |
| 8) Draw concentric circles for the following measurements of radii. Find the width of each circular ring. 9cm and 9cm. Answer: 0 SOLUTION 1 : Draw a rough diagram and mark the given measurements. Take any point O and mark it as the centre. With O as centre draw a circle of radius OA = 9cm. WIth O as centre draw a circle of radius OB = 9cm. Thus the concentric circles are drawn. Width of the circular ring = OB - OA = 9 - 9 = 0 |
| 9) Draw concentric circles for the following measurements of radii. Find the width of each circular ring. 10cm and 10cm. Answer: 0 SOLUTION 1 : Draw a rough diagram and mark the given measurements. Take any point O and mark it as the centre. With O as centre draw a circle of radius OA = 10cm. WIth O as centre draw a circle of radius OB = 10cm. Thus the concentric circles are drawn. Width of the circular ring = OB - OA = 10 - 10 = 0 |
| 10) Draw concentric circles for the following measurements of radii. Find the width of each circular ring. 6cm and 8cm. Answer: 2 SOLUTION 1 : Draw a rough diagram and mark the given measurements. Take any point O and mark it as the centre. With O as centre draw a circle of radius OA = 6cm. WIth O as centre draw a circle of radius OB = 8cm. Thus the concentric circles are drawn. Width of the circular ring = OB - OA = 8 - 6 = 2 |