Question

The area bounded by circles x^2 + y^2 = r, r=1,2 and rays given by

Answer 1

Answer:

Step-by-step explanation:

C1:x^2 +y^2 =1

C2:x^2 +y^2 =4

2x^2 - 3xy-2y^2 =0

(2x+y)(x-2y)=0

(2x+y)=0 (x-2y)=0

m1=-2. m2=1/2

m1.m2=-2*1/2=-1

We have taken area in 4 parts

Pi(2)^2 - pi(1)^2=3pi

3pi/4 is the answer for this question