Question

A circle has a diameter of 8cm, what is the perimeter and the area of the circle

Answer 1

Answer:

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Diameter of a circle is 8 cm. Then find out the area and perimeter of the circle.

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Area of circle is 50.29(≈)cm² and perimeter of circle is 25.14(≈)cm.

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•Given :-

Diameter of the circle = 8 cm.

•To find :-

Area and perimeter of the circle.

• Solution :-

Let the radius of the circle be r cm.

Diameter = 8 cm.

We know,

★

So, Radius (r) = 8/2= 4 cm.

We know,

★

Area of circle= πr²

→Area of circle=

→Area of circle=

→Area of circle= 50.29(≈)cm²

____________________________

We know,

★

Perimeter of circle= 2πr

→ Perimeter of circle=

→Perimeter of circle=25.14(≈)cm

Answer 2

Answer:

perimeter = 15.7 cm

area = 246.74 cm^2

Step-by-step explanation:

perimeter = 2(pi)r

area = (pi)r^2