Practice problem
A circle has radius xπ\frac{x}{\pi}πx. What is the area of a sector with angle y∘y^\circy∘?
x2π\frac{x^2}{\pi}πx2
x2π×y360\frac{x^2}{\pi} \times \frac{y}{360}πx2×360y
x2π×360y\frac{x^2}{\pi} \times \frac{360}{y}πx2×y360
x2π×360y\frac{x^2}{\pi} \times 360yπx2×360y
Type a concept, like “slope” or “photosynthesis”.
