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3 years ago

The perimeter of a rectangular pool is 312 m.

Mathematics

1 answer:

expeople1 [14]3 years ago

3 0

The perimeter of a rectangle is calculated by:

$\boxed{P=width +width+length+ length}$

Remember: In a rectangle, opposite sides are equals.

If we know how much is the width, then it's just apply it to the expression:

$P=width+width+length+length\\312 =68 + 68 + length + length\\312 = 136+(2\cdot length)\\312 - 136 = 2\cdot length\\2\cdot length = 176\\length = \frac{176}{2} \\length = 88$

Therefore, the length of the pool is 88m.

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Step 1 :

Step 2 :

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