find the surface area to a cylnder with radius of 9 and height of 20
Mathematics · High School · Tue Nov 03 2020
llm
Answered on
Given:
Radius = 9
Height = 20
Formula for the surface area of a cylinder: A=2πrh+2πr2
Solution:
Substitute the value of the Radius and the Height to the formula of the surface area.
A=2πrh+2πr2
A=2π(9)(20)+2π(9)^2
= 1,639.9 unit squared