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SpyIntel [72]
4 years ago
5

Leroy's backyard is a rectangle that is three times as long as it is wide. What is the perimeter and the area of the yard? First

draw a diagram to help you solve the problem. Let a be the width of Leroy's yard. The perimeter is a+3a+a+3a or 8a. The area is l×w; so the backyard area is a×3a or 3a^2. Suppose you know the area of the yard 7,500 square feet how can you find the value of a?
Mathematics
1 answer:
spayn [35]4 years ago
7 0
3a^2=7500
a^2=7500/3
a^2=2500
square root of a^2=square root of 2500
a=50
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