Question

if the circumference of a circular sheet is 154 cm find its radius and also find the area of the sheet (take 22/7​

Answer 1

Answer:

If the circumference of a circular sheet is 154 m find its radius also find the area of the sheet take π 227

If the circumference of a circular sheet is 154 m find its radius also find the area of the sheet take π 227⇒r=2π154

If the circumference of a circular sheet is 154 m find its radius also find the area of the sheet take π 227⇒r=2π154⇒r=2×22154×7=24. 5m.

If the circumference of a circular sheet is 154 m find its radius also find the area of the sheet take π 227⇒r=2π154⇒r=2×22154×7=24. 5m.Now, Area of circular sheet=πr2=722×24. 5×24.

Answer 2

Given :

Circumference = 154 cm

To find :

• Radius
• Area

Solution :

• Circumference of a circle = 2πr

$154 = 2 \times \frac{22}{7} \times r \\ r = 154 \times \frac{1}{2} \times\frac {7}{22} \\ r = \frac{7 \times 7}{2} \\ r = \frac{49}{2} \\ r = 24.5 \: cm$

• Area of the circle=πr²

$= \frac{22}{7} \times \frac{49}{2} \times \frac{49}{2} \\ \\ = \frac{11 \times 7 \times 49}{2} \\ \\ = \frac{3773}{2} \\ \\ = 1886.5 \: {cm}^{2}$