For 1) SHouldn't the answer be r3 - pi/3
Area between the cuerve y=sinx and line y=1/2 under the curve =∫(sinx−1/2)dx
Y= sinx
When y= 0, sinx=0 and x=0
When y= 1/2, sinx=1/2 and x=π/6 and 5π/6 for 0 ≤ x ≤ 2pi
Hence Area between the cuerve y=sinx and line y=1/2 under the curve
=∫ from...