Question

Find the circumference and area of a semi circle which has a diameter of 10 cm
​

Answer 1

Given :

• Diameter of semi-circle = 10cm

To find :

• Circumference of semi-circle
• Area of semi-circle

Formula used :

• Circumference of semi-circle = πr + d
• Area of semi-circle = (1/2)πr²

Additional information :

• Area of semi-circle = (1/2) Area of circle
• Perimeter of semi-circle = (1/2) Perimeter of circle + 2× radius

Solution :

✪ Perimeter of semi-circle = (3.14×10) + (2×10)

➩ Perimeter of semi-circle = 31.4 + 20 cm

➩ Perimeter of semi-circle = 51.4 cm

✪ Area of semi-circle = (1/2) × 3.14 × 10 × 10

➩ Area of semi-circle = 314 ÷ 2

➩ Area of semi-circle = 157 cm²

ANSWER :

• Perimeter = 51.4 cm
• Area = 157cm²

Answer 2

$\huge\underline{\bf \orange{AnSweR :}}$

157cm² Ans

Refer to the attachment.

Plz Mark As Brainliest ☃️