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3 years ago

Please help I need this done today

Mathematics

1 answer:

PSYCHO15rus [73]3 years ago

4 0

Answer:

The formula for the area is πr² where r is the radius.

But the radius wasn't given so we have to ring it via the circumference given.

Step-by-step explanation:

Circumference = 87.92

To find the radius;

The formula for finding the circumference is 2πr. Therefore;

$87.92 = 2\pi r \\ \pi = 3.14 \\ therefore \\ 87.92 = 2 \times 3.14r \\87.92 = 6.28r \\ we \: have \: to \: make \: r \: the \: subject \\ r = \frac{87.92}{6.28} \\ = 14$

So now that we have our radius to be 14 we substitute it into the equation for finding the area

$area = \pi {r}^{2} \\ r = 14 \\ therefore \\ area = 3.14 \times {14}^{2} \\ = 3.14 \times 196 \\ = 615.44 \: square \: inches$

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