Question

The area of the circle shown below is 100 pi. What is the diameter (D) of the circle?

Answer 1

Answer:

d=20cm

Step-by-step explanation:

area of circle=pi*r^2

pi*r^2=100pi

r^2=100

r=root 100

radius=10cm

diametre=2*radius

diameter=2*10

=20cm

Answer 2

The diameter of the circle is 20 units.

Step-by-step explanation:

Circle has no sides. It has a circumference along a specified length with is called radius.

• Area of a circle is the enclosed region within a radius.
• Let here radius of the circle be r.
• Area of circle = π$r^{2}$
• Given here is the area of circle = 100 pi
• 100 π = π$r^{2}$
• $100=r^{2}$
• $r=\sqrt{100}$
• $r=10$
• Now 2r = diameter
• diameter = $20 units$
• So, diameter = 20 units