Question

A company expects that total fixed cost will
be Rs. 25,000 and that variable cost will be
Rs. 75,000 on sales of Rs. 1,25,000.
(i)
Find the relation between total cost
and sales.
(ii) Find the break even point.
(iii) What will be the profit for sales of
Rs. 1,00,000?

​

Answer 1

Radius (r1) of 1st circle = 19 cm

Radius (r2) or 2nd circle = 9 cm

Let the radius of 3rd circle be r.

Circumference of 1st circle = 2πr1 = 2π (19) = 38π

Circumference of 2nd circle = 2πr2 = 2π (9) = 18π

Circumference of 3rd circle = 2πr

Given that,

Circumference of 3rd circle = Circumference of 1st circle + Circumference of 2nd circle

2πr = 38π + 18π = 56π

Therefore, the radius of the circle which has circumference equal to the sum of the circumference of the given two circles is 28 cm.