Question

Find the area covered by a road roller in 250 revolutions, if its radius is 42 cm and length is 80 cm.​

Answer 1

Hey there!

• Area covered in 1 revolution =2πrh

                                                         = 2*22*42*80/7

                                                         = 44*6*80

                                                         = 21120 cm²

• Area covered in 250 revolutions = 250*21120

                                                                 = 5280000 cm²

Hope it helps!

Answer 2

ANSWER:-

area in one revolution=2πrh

2×22/7×42×80

21120cm^2

area covered in one revolution=21120cm^2

area covered in 250 revolutions =5280000cm^2

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