Question

The circumference of the base of a cylinder is $180cm$ and its height is $30cm$. Find its surface area.

Answer 1

The circumference of base of cylinder is $2\pi r=10\pi cmr=5cm$

Area of base $\pi r^2=\frac{22}{7}\times 5\times 5=78.5$

The height is $30cm$

The curved surface area is $10\pi \times 30300\times \frac{22}{7}=942c{m}^2$

Surface area is $942+2\left(78.5\right)=157+942=1099c{m}^2$