Question

Find the surface area of the ball. Leave answers in terms of π.

d =2 3/4
@Directrix

Answer 1

Surface Area of a Sphere - Answer in terms of PI

A = 4 * π * r²

Answer 2

so 4*pi*2 3/4?

Answer 3

diameter = 2 3/4 which is 11/4.

half the diameter is 1/2 * 11/4 = 11/8

Answer 4

this one is difficult to me since the 3/4 is there

Answer 5

Important Question:

Is this --> d =2 3/4 2 and 3/4 OR

is it 23 over 4. Very important to know. Look at the text.

Answer 6

2 3/4

Answer 7

A = 4 * π * (11/8) ²

Answer 8

this

Answer 9

Did you get ( 121π ) / 16 square units.

Answer 10

i dont know how to put that into a calculator

Answer 11

It should be an answer option. Look and see. 121 pi all over 16

Answer 12

oh yea it is

Answer 13

Good.