Question

If the difference between the circumference and radius of a circle is 37 cm, then the area of the circle is

• A. 111 cm square
• B. 148 cm square
• C. 259 cm square
• D. 154 cm square

Answer 1

Answer:

D. 154 cm square

Solution:

GIVEN:

circumference - radius = 37 cm

FORMULA USED:

circumference of circle = 2πr

area of circle = πr²   

CALCULATION:

A.T.Q

2πr - r = 37

r(2 × 22/7 -1) = 37

r = (37 × 7)/37

r = 7 cm

Area = 22/7 × 7 × 7 = 154 cm² 

∴ area of the circle is 154 cm²