Scholarship Exam Preparation App
Class 8 - (Math )
Mensuration - Perimeter- Triangle, Quadrilateral Polygon
The difference between the circumference and the radius of a circle is 37 cm. Find the circumference of the circle.
a :
44 cm
b :
7 cm
c :
30 cm
d :
22 cm
Explanation :
2πr - r = 37 -> r(2π - 1) = 37 -> r(37/7) = 37 -> r = 7 cm.
Circumference = 2 × (22/7) × 7 = 44 cm.
Circumference = 2 × (22/7) × 7 = 44 cm.