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What is the surface area of the prism?

A.
144 in2

B.
420 in2

C.
288 in2

D.
140 in2

I really don't know where to post a link to the prism pic

What Is The Surface Area Of The Prism A 144 In2 B 420 In2 C 288 In2 D 140 In2 I Really Dont Know Where To Post A Link To The Prism Pic class=

Sagot :

RedRicinidn
If you want to find the surface area of something and it doesn't have a formula, just look at the area of each side individually and add them up!

The area of a triangle is equal to bh/2 = 16*6/2 =  48 in²
The area of the other triangle would be the same = 48 in²
The lateral side that's 10 by 9 inches = 10 * 9 = 90 in²
The other lateral side that's 10 by 9 is also = 90 in²
The lateral side that's 16 by 9 inches = 16 * 9 = 144  in²

144 + 90 + 90 + 48 + 48 = 420 in²
Insidiousidn

The area of the prism is 420 in. You just have to add 144 + 90 + 90 + 48 + 48 which is equal to 420 in². You just had to add the sides

Hope it helps :)

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