2 years ago

What is the area of a square, in square feet, whose perimeter is 20 feet

1 answer:

3 0

Perimeter of a square = 20 feet = 4a
=>4a = 20
=>a = 20/4
=>a = 5 feet
Area of a square = a²
=>a² = 5²
=>a = 25 square feet

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tia_tia [17]

we know that

The Side-Splitter Theorem: States that If a line is parallel to one side of a triangle and intersects the other two sides, then it divides those two sides proportionally

in this problem

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therefore

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Sladkaya [172]

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Answer:

The area of the shaded region is $329.87\ cm^2$

Step-by-step explanation:

The correct question is

A circle with radius of 4cm sits inside a circle with a radius of 11cm. What is the area of the shaded region?

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we know that

To find out the shaded region subtract the area of the smaller circle from the area of the larger circle

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simplify

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substitute

$A=\pi (11^{2} -4^{2})$

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