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adell [148]
3 years ago
9

A pyramid with a rectangular base is stacked on top of rectangular prism. The height of the composite figure is 12 inches. The l

engths of the rectangular base are 7 inches and 3 inches. The height of the rectangular prism is 4 inches.
What is the volume of the composite figure?

140 cubic inches
147 cubic inches
168 cubic inches
196 cubic inches
Mathematics
2 answers:
Arte-miy333 [17]3 years ago
8 0

Answer:

Step-by-step explanation:

140 cubic inches

Ashey
2 years ago
Thank youu
Mademuasel [1]3 years ago
7 0

Answer: 140 cubic inches

Step-by-step explanation:

The formula for determining the volume of a rectangular base pyramid is expressed as

Volume = 1/3 × base area × height

From the information given,

Length = 7 inches

Width = 3 inches

Base area = 7 × 3 = 21 square inches

Height = 12 - 4 = 8 inches

Volume = 1/3 × 21 × 8 = 56 cubic inches

The formula for determining the volume of a rectangular prism is expressed as

Volume = Length × width × height

Volume = 7 × 3 × 4 = 84 cubic inches

Volume of the composite figure is

56 + 84 = 140 cubic inches

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