Question

find the curved surface area and the total surface area of a cylinder whose dimensions are:- radius of the base is = 14 cm. and the height is 90 cm , the total surface area should be 2486.88 cm^2 as answer, I know curved already so just find Total!! :) Thank You​

Answer 1

Step-by-step explanation:

Given that

Radius of base is 14cm

Height is 90cm

To find

curved surface area and

Total surface area

Solution

$curved \: surface \: area = 2\pi \: r \: h$

$= 2 \times \pi \times 14 \times 90 \\ = 7916.8 {cm}^{2}$

Hence curved surface area is 7916.8 cm sq

$total \: surface \: area = 2 \times \pi \times {r}^{2} + curved \: surface \: area$

$= 2 \times \pi \times {14}^{2} + 7916.8 \\ = 9148.30 {cm}^{2}$

hence total surface area will be 9148.30 sq cm .