Mandy has a garden that is shaped like a right triangle, as shown below. Mandy wants to extend each of the side lengths of her

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问题 Mandy has a garden that is shaped like a right triangle, as shown below.

Mandy wants to extend each of the side lengths of her original garden by 2 feet. What will the total area of her garden be, in square feet?

选项 A、176
B、782
C、864
D、950
E、1,900

答案D

解析 The correct answer is D. To solve this problem, recall that the formula for the area of a triangle is

(b)(h). Mandy is adding 2 feet to the length of each of the sides of her garden, so the new base is 50 and the new height is 38. Therefore, the total area will be

(50)(38)= 950 square feet.

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Mandy has a garden that is shaped like a right triangle, as shown below. Mandy wants to extend each of the side lengths of her

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