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Bas_tet [7]
3 years ago
7

Question 13 Find the volume of the prism.

Mathematics
2 answers:
ehidna [41]3 years ago
6 0

Answer:

volume of the prism=(1/2×9×6)×12

=27×12

=324 cm³

Ksenya-84 [330]3 years ago
3 0

Answer:

\boxed {\boxed {\sf B. \ 324 \ cm^3}}

Step-by-step explanation:

The volume of a triangular prism is the product of the area of the triangular cross-section (B) and the height (h).

<h2>V= B*h</h2>

First, let's find the area of the triangular cross-section/the end of the triangle. The area of a triangle is:

B= \frac{1}{2} b*h

The base of the triangle base (not the prism) is 6 centimeters and the height is 9 centimeters.

  • b= 6 cm
  • h= 9 cm

B= \frac{1}{2} (6 \ cm)(9 \ cm)

Multiply the numbers in parentheses.

B= \frac{1}{2}(54 \ cm^2)

Multiply by 1/2 or divide by 2.

B= 27 \ cm^2

Now we know the area of the cross-section or base is 27 square inches. The height of the prism is 12 centimeters.

  • B= 27 cm²
  • h= 12 cm

Substitute the values into the volume formula for a triangular prism.

V= 27 \ cm^2 * 12 \ cm

Multiply.

V= 324 \ cm^3

The volume of the prism is <u>324 cubic centimeters and choice B is correct.</u>

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