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Alex777 [14]
2 years ago
13

Radius= 4cm. find the area and diameter of the circle​

Mathematics
2 answers:
Bezzdna [24]2 years ago
6 0
<h3>given:</h3>

radius= 4 cm

<h3>to find:</h3>

the area and the diameter of the circle.

<h3>solution:</h3><h3>diameter:</h3>

d = 2r

d = 2 \times 4

d = 8 \: cm

<u>therefore</u><u>,</u><u> </u><u>the</u><u> </u><u>diameter</u><u> </u><u>of</u><u> </u><u>the</u><u> </u><u>circle</u><u> </u><u>is</u><u> </u><u>8</u><u> </u><u>centimeters</u><u>.</u>

<h3>area:</h3>

a = \pi {r}^{2}

a = \pi \times  {4}^{2}

a = 50.26548 \:  {cm}^{2}

a = 50.27 \:  {cm}^{2}

<u>hence</u><u>,</u><u> </u><u>the</u><u> </u><u>area</u><u> </u><u>of</u><u> </u><u>the</u><u> </u><u>circle</u><u> </u><u>is</u><u> </u><u>50.27</u><u> </u><u>square</u><u> </u><u>centimeters</u><u>.</u>

antiseptic1488 [7]2 years ago
5 0
<h3>Given:</h3>
  • Radius= 4 centimeters
<h3>Diameter of the circle:</h3>

diameter = 2r

d = 2 \times 4

d = 8 \: cm

<h3>Area of the circle:</h3>

area = \pi {r}^{2}

a = \pi \times  {4}^{2}

a = 50.26548 \:  {cm}^{2}

a = 50.27 \:  {cm}^{2}  \: (2 \: d.p)

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