Question

the diameter of a roller is 84cm and its length is 120cm its takes 500 complete revolution to move once over to level a playground find the area of the playground in m2​

Answer 1

$\huge{ \tt{ \purple{QUESTION:-}}}$

the diameter of a roller is 84cm and its length is 120cm its takes 500 complete revolution to move once over to level a playground find the area of the playground in m2

$\huge \tt \purple{ANSWER:-}$

1584m²

SOLUTION ⤵️

Radius of the roller

$\sf (r) = \frac{84}{2} cm = 42cm.$

length of the roller ( h ) = 120cm.

Area of the playground levelled in taking 1 complete revolution 2πrh

= 2 × 227 × 42 × 120 = 31680cm²

Area of the playground

= 31680 × 500 = 15840000cm²

$\sf \frac{15840000}{100 \times 100} {m}^{2} = 1584 {m}^{2} {\underline{ \mathfrak \red{answer}}}$

Answer 2

hope it's help u dear..!!!