Question

10 Calculate the surface area of this cylinder, with radius 5.3 cm and height 9.5 cm 5.3 cm 9.5 cm​

Answer 1

492.7

Explanation:

SA of cylinder is made of 2 circles and 1 rectangle

circle = pi*r^2 = pi * (5.3)^2 = 88.25

rectangle = h * circumference of circle = 9.5 * pi*10.6 = 316.20

since there are 2 circles, we multiply the area of 1 circle by 2.

2(88.25) + 316.20 = 492.7