Mandy has a garden that is shaped like a right triangle, as shown below.[img]20

游客2024-01-12 57

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

[br] 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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