Question

Find the surface area of the figure below.

Answer 1

A. 4300.84 mm2
B. 17203.36 mm2
C. 5476.00 mm2
D. 464.96 mm2

Answer 2

That object appears to be a sphere correct?

Answer 3

right

Answer 4

The formula for Surface area of a sphere is
\[A = 4\pi r^2\]

The relationship between diameter and radius is \[r = \frac{ 1 }{ 2 } D\]
r= Radius
D = Diameter

Using what you know you can now solve for the surface area of the given object assuming the measurement given is the diameter.

Answer 5

what

Answer 6

@Johnbc SOS

Answer 7

Solve for the radius and use it in the surface area formula

Answer 8

i cant

Answer 9

Radius is half the diameter.

Answer 10

i know that and my diameter is 75 my radius is 37.5

Answer 11

Was it not 74mm?

Answer 12

which means the radius is just 37

Answer 13

Correct!

Answer 14

Now you have the formula for the surface area of a sphere so just plug in the value of the radius and you will find the surface area.

Answer 15

Surface Area of a Sphere
\[Area = 4\pi r^2\]

Answer 16

A=4*3.14*37²

Answer 17

17194.64

Answer 18

Close, maybe a small calculator error. You're value is 17203.361

Answer 19

thats what i was thinking