Question

48. If the radius of a wheel of a cycle is 42 cm. How much distance will the
cover in 400 revolutions!
(a) 1056 mtr. (b) 1080 mtr. (c) 900 mtr. (d) 1120 mtr​

Answer 1

Answer:

105600 cm

Step-by-step explanation:

radius= 42 cm

circumference= 2×22/7×42

= 264cm

dist. in 400 revolutions= 264cm × 400

= 105600 cm

Answer 2

Answer:

(a)1056

Step-by-step explanation:

radius of wheel (r) is 42cm

circumference of wheel is

2πr = 2×22/7×42= 264cm

circumference of wheel is equal to 1 revolution

so the distance will be covered in 400 hundreds revolution is

264×400 = 105600cm or 1056m