a = 1/2 r^2 θ
so,
θ = 2000/r^2
p = 2r + rθ = 2r + 2000/r
so, find where dp/dr=0
a bed is in a form of a circular sector. find its radius if the area of the sector is 1000 centimeter square and its perimeter is a minimum
1 answer
1 answer