Question

Find the surface area of the figure to the nearest whole number.

Answer 1

Do you know what the composite figure is made up of?

Answer 2

nope

Answer 3

Its made up of a pyramid and a rectangular prism

Answer 4

Do you know what the surface area for those figures are?

Answer 5

no how do I find them

Answer 6

Okay...there's equations for both of them
for the pyramid is 1/2pl+B
for the rectangular prism: ph + 2B
p=perimeter of the base l=slant height h=height B=area of the base

Answer 7

Once you find the surface area for both the figure, find the area of the shared side and subtract from the added surface area of both th efigures

Answer 8

A. 310 ft2

B. 158 ft2

C. 135 ft2

D. 74 ft2

Answer 9

those are the answers to choose from btw

Answer 10

I'm not giving you the answer...you have to figure it out

Answer 11

so the answer would be c ?

Answer 12

?

Answer 13

how did you solve it? plug in the variables for me in both equations so I can see if you did it properly

Answer 14

1/2pl+B and ph + 2B wait so its A then right ?

Answer 15

plug in the numbers for the variables. so what's the perimeter of the pyramid? that's p in the first equation

Answer 16

P=26.4

Answer 17

I think the answer will be 158

Answer 18

P=4.5+4.5+4.5+4.5

Answer 19

ohh

Answer 20

so 18

Answer 21

@smr_kml did you subtract the area of the shared bases?

Answer 22

Yea and then do you know what the slant height of the pyramid is? It's not written so you have to use the pythagorean theorem to find it

Answer 23

ohhhh No!

Answer 24

it's confusing me!

Answer 25

idr how to do that

Answer 26

so I think it's 135 but not sure!

Answer 27

Do you know how to do the pythagorean theorem?