# help!!! the volume of a cylinder is 1408 metre cube and its height is 7 cm. find its lateral surface area

1
by SabaFatima1

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by SabaFatima1

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its height = 7 cm = 7/100 = 0.07 m

volume of cylinder = πr²h

1408 = 22/7 × r² × 0.07

1408 = 0.22 r²

1408/0.22 = r²

6400 = r²

√6400 = r

80 = r

so the radius of the cylinder is 80 m

lateral surface area = 2πrh

= 2 × 22/7 × 8 × 0.07

= 1.12 m²