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find the surface area of composite figure. use 3.14 for π. round to the nearest tenth

Find The Surface Area Of Composite Figure Use 314 For Π Round To The Nearest Tenth class=

Sagot :

Answer:

334 in^2.

Step-by-step explanation:

The surface area = area of the top prism + area of the bottom - 2 * area of the base of the  top smaller prism

= 2(5*3 + 5*3 + 3*3) + 2(9*7 + 9*5 + 7*5) -  2* 3*5

= 2* 39 + 2*143 - 30

= 334

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