the diameter of a roller is 84cm , its length =120 cm , it takes 500 complete revolutions to move once over tolevel of a playground then find its area in m. sq.
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area of roller 2 pie r^2 h
radius 84 /2 =42 cm
2× 22/7 ×42×42×120 =1330560 cm^2
1330560 × 500 = 665280000
radius 84 /2 =42 cm
2× 22/7 ×42×42×120 =1330560 cm^2
1330560 × 500 = 665280000
ishu146:
in m ^2 is
66528
no its wrong
but by the way thanks sis
sorry bt in this method u solve it
this question
i undertood frnd , itss kkk but thanks again
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