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3 years ago

What is the volume of the composite figure? _?_ Cubic inches

Mathematics

2 answers:

qaws [65]3 years ago

4 0

1. To solve this exercise you must apply the formula for calculate the volume of a rectangular prism and the formula for calculate the volume of a rectangular pyramid:

2. Volume the rectangular prism:

V1=LxWxH

V1=(7 in)(3 in)(4 in)
V1=84 in³

3. Volume of the rectangular pyramid:

V2=BxH/3

B=(7 in)(3 in)=21 in

H=12 in-4 in=8 in

V2=(21 in)(8 in)/3
V2=56 in³

4. The volume of the composite figure is

V=V1+V2
V=140 in³

katrin2010 [14]3 years ago

4 0

140 is the answer on edge

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Given that:

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$Scale = 1:40$ means that the dimension of the room is 40 times the dimension of the rectangle.

So, we have:

$Length = \frac{6}{12}ft * 40 = 20ft$

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