The diameter of a roller is 77cm and it's length is 105cm it takes 600 revolution moving once over , to level a playground find the area of the playground is square metres
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Answered by
45
hiii!!!
here's ur answer...
given the length of the roller is 105m and diameter is 77cm
therefore radius of the roller is 77/2cm
let height be it's length
CSA of the roller=2πrh
=2×22/7×77/2×105
=2×11×11×105
=22×1155
=25410cm²
in metres=25410/100
=254.1m²
if it takes 600 revolutions to level the playground then the area of the playground is =254.1×600
=152460m²
hence the final answer is 152460m²
hope this helps...
___☺☺☺___
here's ur answer...
given the length of the roller is 105m and diameter is 77cm
therefore radius of the roller is 77/2cm
let height be it's length
CSA of the roller=2πrh
=2×22/7×77/2×105
=2×11×11×105
=22×1155
=25410cm²
in metres=25410/100
=254.1m²
if it takes 600 revolutions to level the playground then the area of the playground is =254.1×600
=152460m²
hence the final answer is 152460m²
hope this helps...
___☺☺☺___
Answered by
14
answer will be 152460 metre square.
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