Question

The diameter of a circle is 28 cm, then find the area and circumference of the circle.​

Answer 1

Answer:

Circle

Solve for area

A≈615.75cm²

d Diameter

28

cm

Using the formulas

A=πr2

d=2r

Solving forA

A=1

4πd2=1

4·π·282≈615.75216cm²

Answer 2

Answer:

• Area of circle = 616 cm²
• Circumference = 88 cm

Step-by-step explanation:

$\sf \green{ \underline{Given:}}$

• Diameter of circle = 28 cm.

$\sf \green{ \underline{To \: Find:}}$

• Area and circumference of circle.

$\sf \green{ \underline{Using \: formula:}}$

• Area of circle = πr²
• Circumference = 2πr
• Radius = Diameter/2

$\sf \green{ \underline{Solution::}}$

Diameter of circle = 28 cm.

• Radius = Diameter/2

↣ Radius = 28/2 = 14 cm

So,

Area of circle = πr²

↣ 22/7 × 14 × 14

↣ 616 cm²

Now,

Circumference = 2πr

Circumference = 2 × 22/7 × 14

Circumference = 88 cm

Therefore:

The area of circle = 616 cm²

Circumference of circle = 88 cm