Question

EXERCISE 21B
1. Find the circumference of a circle whose radius is
(1) 28 cm
(11) 10.5 cm
((iii) 3.5 m
2. Find the circumference of a circle whose diameter is
(1) 14 cm
(11) 35 cm
(ii) 10.5 m
3. Find the radius of a circle whose circumference is 176 cm.
4. Find the diameter of a wheel whose circumference is 264 cm.
5. Find the distance covered by the wheel of a car in 500 revolutions if the diameter of the
wheel is 77 cm.
6. The diameter of the wheel of a car is 70 cm. How many revolutions will it make to travel 1.65 km?​

Answer 1

Answer:

EXERCISE 21B - 36768502. ... (1) 28 cm (11) 10.5 cm ((iii) 3.5 m 2. Find ... ( 1) 14 cm (11) 35 cm (ii) 10.5 m 3. Find the radius of a circle whose circumference is 176 cm. 4.