Mandy has a garden that is shaped like a right triangle, as shown below. Suppose Mandy created another garden with the same di

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

Suppose Mandy created another garden with the same dimensions adjacent to the short side of her current garden, as shown below:

What is the total area of Mandy’s gardens in square feet?

选项 A、864
B、1,728
C、3,456
D、41472
E、82944

答案B

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

(b)(h). The base of this new, larger garden is 2×48 = 96, and the height is still 36. Therefore, the area is

(96)(36)= l,728 square feet.

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