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3 years ago

The numerical value of the area of a square is 3 times it’s perimeter. What is the length of its side?

1 answer:

6 0

Let the length be x

Area = x²
Perimeter = 4x

<span>Area of a square is 3 times its perimeter
</span>⇒ x² = 3(4x)

x² = 3(4x)
x² = 12x
x² - 12x = 0
x(x - 12) = 0
x = 0 or x = 12

Since x cannot be zero, x = 12

Answer: The length is 12 units.

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3 years ago

Twice the sum of a number and 8 is the same aa the difference of 3 and the number. Find the equation that could be used to find

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