Question

If circumference of a circle is 274 cm than find out it's radius.​

Answer 1

Given:-

• Circumference of a Circle is 274cm.

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To Find:-

• Radius of a Circle.

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Solution:-

Here,

• Circumference = 274 cm

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★Formula used:-

Circumference of Circle = 2πr

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→ 274 = 2 × 22/7 × r

→ 274/2 = 22/7 × r

→ 137 = 22/7 × r

→ 137 × 7/22 = r

→ 959/22 = r

→ r = 43.59 cm

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Hence,

• the radius of a circle is 43.59 cm.

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More Formulas:-

→ Area of rectangle = length × breadth sq.units

→ Perimeter of square = 4 × side units

→ Area of square = side × side sq.units

→ Perimeter of circle = 2πr units

→ Area of circle = πr² sq.units

→ Perimeter of parallelogram = 2 × (a + b) units

→ Area of parallelogram = base × height sq.units

→ Perimeter of rhombus = 4 × side units

→ Area of rhombus = 1/2 × diagonal (1) × diagonal (2) sq.units

→ Perimeter of equilateral triangle = 3 × side units

→ Area of equilateral triangle = √3/4 × a² = 1/2 × side × height sq.units

→ Perimeter of trapezoid = (Sum of all sides) units

→ Area of trapezoid = 1/2 × height × (sum of parallel sides) sq.units