Question

if the volume of a cylinder is 112 cm cube and its radius is 4 cm then find the curved surface area of the cylinder​

Answer 1

Answer:

55.31

Step-by-step explanation:

VOLUME OF CYLINDER=112

22/7×4×4×H=112

H=112×7/22×16

H=2.2CM

CURVED SURFACE AREA=2×22/7×4×2.2

=55.31

ANSWER=55.31

Answer 2

Answer:

The C.S.A. of cylinder=56.01$cm^{2}$

Step-by-step explanation:

We had given the volume of cylinder i.e.$\pi r^{2} h$=112cm

As we have given the radius=4cm we can find the height of cylinder

Therefore $h=\dfrac{volume}{\pi r^{2}  }$

h=$\dfrac{112}{3.14\times4\times4}$=2.23cm

Therefore h=2.23cm

Now we need to curved surface area(C.S.A)=[tex]2\times\pi \times r\times h[/tex]

C.S.A=$2\times3.14\times4\times2.23$=56.01cm^2