Question

the curve surface area of a right circular cylinder is 4.4m if the radius of the base of the cylinder is 0.4m find its height

Answer 1

Curved Surface Area=2πrh
4.4=2*22/7*0.4*h
4.4/0.4=2*22/7*h
44/4=2*22/7*h
11/2*7/22=h
77/44=h
1.75=h

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Answer 2

$Curved \: \: surface \: \: area \: = 4.4 {m}^{2} \\ radius \: = 0.4m \\ \\ C.S.A = 2\pi \: rh \\ = > 2 \times \frac{22}{7} \times 0.4 \times h = 4.4 \\ \\ = > \frac{17.6}{7} \times h = 4.4 \\ \\ = > h = 4.4 \div \frac{17.6}{7} \\ \\ = >h = 4.4 \times \frac{7}{17.6} \\ \\ = > h = 1.75 \\ \\ height =1.75m \\ \\ Hope \: \: it \: \: helps.$