What is the diameter of a satellite dish with a circumference of 957.7?

Find dy/dx using implicit differentiation ln(20+e^xy)=y

The length of a rectangular piece of land is 92 yards more than three times its width. the perimeter is 760 yards. find its dimensions.

Aladder that is 20ft long is leaning against the side of a building. if the angle formed between the ladder and the ground is 75 degrees how far is the bottom of the from the base of the building?