Question

if the circumference of a circle with radius 3.5 cm and centre O is 22 cm find the perimeter of the quarter of the circle

Answer 1

radius=3.5cm
Diameter= 2 x radius = 7cm
Perimeter of quarter circle =
$((1 \div 4) \times \pi \times diameter ) + diameter$
=
$1 \div 4 \times 22 \div 7 \times 7 + 7$
= 12.5

Answer 2

Answer:

The perimeter of the quarter circle is 12.5 cm.

Step-by-step explanation:

Given : If the circumference of a circle with radius 3.5 cm and center O is 22 cm.

To find : The perimeter of the quarter of the circle?

Solution :

Circumference of circle C= 22 cm  

Radius r=3.5 cm

Quarter=$\frac{1}{4}$th of circle  

Perimeter of quarter of the circle is given by,

$P=2r+\frac{C}{4}\\\\P=2\times 3.5+\frac{22}{4}\\\\P=7+5.5\\\\P=12.5$

Therefore, The perimeter of the quarter circle is 12.5 cm.