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adelina 88 [10]
2 years ago
14

ed\]\ \space\ Hello mathematicians" alt="\[\Boxed\]\ \space\ Hello mathematicians" align="absmiddle" class="latex-formula">
Find the perimeter and the area of a circle when radius is 10 cm.
Note:
✯ No spam
✯ No short answers​
Mathematics
2 answers:
kolezko [41]2 years ago
7 0

Answer:

Step-by-step explanation:

Using 3.14 as pi.

Perimeter of a circle = 2*pi*radius

= 2*3.14*10

= 62.8 cm

Area of a circle = pi*radius*radius

= 3.14*10*10

= 314 cm^2

Mrac [35]2 years ago
7 0

Solution:

<u>Formulas to remember:</u>

  • Circumference of circle = 2πr (r = radius)
  • Area of circle = πr² (r = radius)

<u>Finding the circumference of the circle:</u>

  • Circumference of circle = 2πr
  • => Circumference of circle = 2 x 22/7 x 10
  • => Circumference of circle = 44/7 x 10
  • => Circumference of circle = 440/7 ≈ 62.86 cm

<u>Finding the area of the circle:</u>

  • πr² = Area of circle
  • => 22/7 x 10 x 10 = Area of circle
  • => 22/7 x 100 = Area of circle
  • => Area of circle = 2200/7 cm² ≈ 314.29 cm²
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