Directions: Calculate the area of a circle using 3.14x the radius 1) d = 4.4 mm. Calculate the area of the circle. 2) d = 3.7 cm. Calculate the area of the circle. 3) r= 8.3 cm. Calculate the area of the - QAmmunity.org

Directions: Calculate the area of a circle using 3.14x the radius 1) d = 4.4 mm. Calculate the area of the circle. 2) d = 3.7 cm. Calculate the area of the circle. 3) r= 8.3 cm. Calculate the area of the

asked Apr 13, 2023 152k views

1 Answer

$\qquad\qquad\huge\underline{{\sf Answer}}♨$

As we know ~

Area of the circle is :

$\qquad \sf  \dashrightarrow \:\pi {r}^(2)$

And radius (r) = diameter (d) ÷ 2

[ radius of the circle = half the measure of diameter ]

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Problem 1

$\qquad \sf  \dashrightarrow \:r = d / 2$

$\qquad \sf  \dashrightarrow \:r = 4.4/ 2$

$\qquad \sf  \dashrightarrow \:r = 2.2 \: mm$

Now find the Area ~

$\qquad \sf  \dashrightarrow \: \pi {r}^(2)$

$\qquad \sf  \dashrightarrow \:3.14 * {(2.2)}^(2)$

$\qquad \sf  \dashrightarrow \:3.14 * {4.84}^{}$

$\qquad \sf  \dashrightarrow \:area \approx 15.2 \: \: mm {}^(2)$

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problem 2

$\qquad \sf  \dashrightarrow \:r = d / 2$

$\qquad \sf  \dashrightarrow \:r = 3.7 / 2$

$\qquad \sf  \dashrightarrow \:r = 1.85 \: \: cm$

Bow, calculate the Area ~

$\qquad \sf  \dashrightarrow \: \pi {r}^(2)$

$\qquad \sf  \dashrightarrow \:3.14 * (1.85) {}^(2)$

$\qquad \sf  \dashrightarrow \:3.14 * 3.4225 {}^{}$

$\qquad \sf  \dashrightarrow \:area \approx 10.75 \: \: cm {}^(2)$

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Problem 3

$\qquad \sf  \dashrightarrow \:\pi {r}^(2)$

$\qquad \sf  \dashrightarrow \:3.14 * (8.3) {}^(2)$

$\qquad \sf  \dashrightarrow \:3.14 * 68.89$

$\qquad \sf  \dashrightarrow \:area \approx216.31 \: \: cm {}^(2)$

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Problem 4

$\qquad \sf  \dashrightarrow \:r = d / 2$

$\qquad \sf  \dashrightarrow \:r = 5.8 / 2$

$\qquad \sf  \dashrightarrow \:r = 2.9 \: \: yd$

now, let's calculate area ~

$\qquad \sf  \dashrightarrow \:3.14 * {(2.9)}^(2)$

$\qquad \sf  \dashrightarrow \:3.14 * 8.41$

$\qquad \sf  \dashrightarrow \:area \approx26.41 \: \: yd {}^(2)$

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problem 5

$\qquad \sf  \dashrightarrow \:r = d / 2$

$\qquad \sf  \dashrightarrow \:r = 1 / 2$

$\qquad \sf  \dashrightarrow \:r = 0.5 \: \: yd$

Now, let's calculate area ~

$\qquad \sf  \dashrightarrow \:\pi {r}^(2)$

$\qquad \sf  \dashrightarrow \:3.14 * (0.5) {}^(2)$

$\qquad \sf  \dashrightarrow \:3.14 * 0.25$

$\qquad \sf  \dashrightarrow \:area \approx0.785 \: \: yd {}^(2)$

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problem 6

$\qquad \sf  \dashrightarrow \:\pi {r}^(2)$

$\qquad \sf  \dashrightarrow \:3.14 * {(8)}^(2)$

$\qquad \sf  \dashrightarrow \:3.14 * 64$

$\qquad \sf  \dashrightarrow \:area = 200.96 \: \: yd {}^(2)$

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Endrigoantonini answered Apr 19, 2023

by Endrigoantonini

4.8k points

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