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o-na [289]
3 years ago
11

Calculate the perimeter and area of a circle whose radius is 7cm(22/7

1" title="\pi" alt="\pi" align="absmiddle" class="latex-formula">
​
Mathematics
1 answer:
Grace [21]3 years ago
7 0

<u>Given</u><u> </u><u>:</u>

  • Radius, r = 7 cm

<u>To</u><u> </u><u>find</u><u> </u><u>out</u><u>:</u>

Find the perimeter ( circumference ) and area of the circle?

<u>Formula</u><u> </u><u>used</u><u>:</u>

  • Area of circle = πr²

  • Perimeter of circle = 2πr

<u>Solution</u><u>:</u>

<u>★</u> Area of circle = πr²

= 22/7 × 7²

= 22/7 × 49

= 22 × 7

= 154 cm²

★Perimeter of circle = 2πr

= 2 × 22/7 × 7

= 2 × 22

= 44 cm

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