quadrilateral abcd is inscribed in this circle.
what is the measure of angle c?
explain how you got the answer.

Two sides of a triangle mesure 20cm and 30cm. what is the measure of the third side

Under normal conditions, 1.5 feet of snow will melt into 2 inches of water. during a winter season high in the mountains, 301 feet of snow fell. how many inches of water will there be when the snow melts?

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