\sqrt{3^{2} - 4^{2} } CAN YOU SOLVE THIS.

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ab=9, and ac=12, find hc.

There are 15 plates and each plate is either 7 or 12 inches diameter. which systems of equations do you use to find the number of 7 inch plates, x and 12 inch plates, y

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base