Find the radius and circumference of a circle whose area is 144π cm².

Question

KnowledgeBoat · Accepted Answer

Let radius = r cm. Area of circle = πr² ⇒ 144π = πr² ⇒ r² = 144 ⇒ r = = 12 cm. Circumference of a circle = 2πr = = cm. Hence, radius = 12 cm and circumference = cm.

Mathematics

Find the radius and circumference of a circle whose area is 144π cm².

Mensuration

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Mathematics

Find the radius and circumference of a circle whose area is 144π cm2.

Mensuration

Related Questions

Find the radius and area of a circle if its circumference is 18π cm.

Find the perimeter of a semicircular plate of radius 3.85 cm.

A sheet is 11 cm long and 2 cm wide. Circular pieces 0.5 cm in diameter are cut from it to prepare discs. Calculate the number of discs that can be prepared.

If the area of the semi-circular region is 77 cm2, find its perimeter.

Find the radius and circumference of a circle whose area is 144π cm².

If the area of the semi-circular region is 77 cm², find its perimeter.