The length of a rectangle is 3 yd less than twice the width, and the area of the rectangle is 65 yd2. Find the dimensions of the rectangle.

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

Amonument at a park is in the shape of a right square pyramid. a diagram of the pyramid and its net are shown. what is the surface area of the monument? enter the answer in the box. m²

Franco wants to double the volume of the cone. what should he do?