Question

The diameter of semicircle is 49m.Find it's area and perimeter.​

Answer 1

Answer:

Area of semicircle is 20751.5 m²

perimeter of semicircle is 154m

Answer 2

Solution :-

Given ,

• Diameter of semicircle = 49m

We need to find ,

• Area & perimeter

Here , as we know that semicircle = Circle/2

So , similarly

• Area of semicircle = Ar(circle)/2 = πr²/2

• Perimeter of semicircle = Circumference/2 = 2πr/2 = πr

And ,

• Radius = diameter ÷ 2

→ r = 49/2 = 24.5m

♦ Area :-

Area = πr²/2

→ Area = 3.14 ( 24.5 )² /2

→ Area = 942.3 m²

♦ Perimeter :-

Perimeter = πr

→ Perimeter = 3.14 ( 24.5 )

→ Perimeter = 76.9 m

Hence , area = 942.3 m² & perimeter = 76.9 m