A20° sector in a circle has an area of 21.5π yd². what is the area of the circle?

What is the solution to the equation below? 3/x-2+6=square root x-2 +8

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

Onnie is considering doing some long term investing with money that she inherited. she would like to have $50,000 at the end of 30 years. approximately how much money would lonnie need to put into an account earning 6% interest compounded annually in order to meet her goal?