Respuesta :

wolf1728

Answer:

There are 5 surface areas.

Left rectangle = 5 x 4 = 20 square inches

Tilted top rectangle = 13 x 4 = 52 square inches

Bottom Rectangle = 12 x 4 = 48 square inches

Side triangles = 5 x 12 x .5 = 30 square inches EACH

Total area = 20 + 52 + 48 + 30 + 30 =

180 square inches



Step-by-step explanation:


monkiemady

What is required in this is to find the area of each piece.

First rectangle (top)

A=13*4

A=52

Second rectangle (bottom)

A=12*4

A=48

Third rectangle (left side)

A=5*4

A=20

Triangles (both (causing us to multiple by 2 in the problem) because they have the same length and width)

A=1/2*5*12*2

A=5*12 (1/2 and 2 cancel out)

A=60

Now add them up:

52+48+20+60=SA (remember 60 is both triangles so we only have 4 measurements)

180=SA



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