Set 4: Triangles

Explanation

Answer: B

Victoria is making a triangular sail with a base of 17 feet and a height of 17 feet. What is the area of the sail?

134.5

144.5

✓ Correct

154.5

Detailed Explanation

Choice B is correct. Area of a triangle: $A = \frac{1}{2} \times base \times height$ 1. $A = \frac{1}{2} \times 17 \times 17$ $A = \frac{1}{2} \times 289$ $A = 144.5$ Therefore, the area is 144.5 square feet.

Key Steps:

•

The correct answer is 144.5

Why others are wrong:

A: This would give an incorrect result. Choice A is incorrect and may result from a calculation error.

C: This would give an incorrect result. Choice C is incorrect and may result from a calculation error.

D: This would give an incorrect result. Choice D is incorrect and may result from a calculation error.

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