Question

Morning!

I am here with a handful of geometry questions today. Please answer the question based off the image(s) below.

If you are not sure of the answer please leave a comment, DO NOT ANSWER THE QUESTION UNLESS YOU KNOW THE ANSWER. Please don't take me points! Thanks for understanding.

Anyways, please show all of your work and explain your thinking! Answer all 3 steps please. Thanks!

Answer 1

C. Sphere

Volume:

• V = 4/3πr³ = 4/3*9³π = 972π cm³

Surface area:

• A = 4πr² = 4*9²π = 324π cm²

B. Cylinder

Volume:

• V = πr²h = 3²*9π = 81π in³

Surface area:

• A=2πrh + 2πr² = 2π(3*9+3²) = 2π(36) = 72π in²

A. Right Cone

Volume:

• V = 1/3πr²h = 1/3π*5²*21 = 175π cm³

Surface area:

• A=πr(r+√(h²+r²)) = 5π(5 + √(21²+5²)) = 5(26.58)π ≈ 133π cm²