Area and length in polar coordinates
The slice is a sector, so area is $\tfrac12\int r^2\,d\theta$ — and the angle range that traces the curve once decides the answer.
About 25 minutes7 activities Paper packet
The slice is a sector, so area is $\tfrac12\int r^2\,d\theta$ — and the angle range that traces the curve once decides the answer.
About 25 minutes7 activities Paper packet