Question

What is the area of a sector with radius 4 and an angle of 18°? Use 3.14 for p...

Answer 1

`(18^o)/(360^o)=(1)/(20)\\r=4\\\\A=(1)/(20)\cdot\pi\cdot4^2=(1)/(20)\pi\cdot16=(16)/(20)\pi=(4)/(5)\pi=0.8\pi\approx0.8\cdot3.14=2.512\\\\Answer:\boxed{A=2.512}`