Question

Find the total surface area of the following cylinders

Answer 1

LSA $=2\pi rh+2\pi r^2=2\pi r(h+r)$

$\left(a\right)=2\times \frac{22}{7}\times 14\left(22\right)$

$88\times 22=1936c{m}^2$

(b) $=2\times \frac{22}{7}\times 1\times \left(3\right)=18.857c{m}^2$