Renata has to cover only the lateral surface of a cylindrical container of height 12.8 in. and radius 15.1 in. with fabric. To the nearest square unit, how much fabric does she need?

1 Answer
Binayaka C.
Apr 30, 2017

She needs # 8.4 # sq.ft. of fabric to cover lateral surface.

Explanation:

Lateral surface area of a cylinder is #A_l=2*pi*r*h ; r= 15.1 , h=12.8#

Lateral surface area of a cylinder is #A_l=2*pi*15.1*12.8 =1214.4# sq.inch

In square feet : #1214.4/12^2 = 8.4 (1dp)#

She needs #1214.4 #sq.in or # 8.4 #sq.ft. of fabric to cover lateral surface.[Ans]

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