Question

if the area of a circular field is 30800 m square then the perimeter of field is ​

Answer 1

Answer:

Given:

The area of semi-circular field = 30800 m2

Formula used:

Area of semi-circle = (πr2)/2

The perimeter of the semi circle = πr + 2r

Where, r = Radius of the circle

Calculation:

According to the question,

The area of a semi-circular field = 30800 m2

⇒ (πr2)/2 = 30800

⇒ r2 = (30800 × 2 × 7)/22

⇒ r2 = 1400 × 2 × 7

⇒ r2 = 19600

⇒ r = 140 m

Perimeter of the semi-circular field = πr + 2r

⇒ Perimeter of the semi-circular field = (22/7) × 140 + 2 × 140

⇒ Perimeter of the semi-circular field = 440 + 280

⇒ Perimeter of the semi-circular field = 720 m

∴ The perimeter of the semi circular field is 720 m.

Step-by-step explanation:

have a great day

Answer 2

Answer:

please refer to the attached