What is the answer if 202^2 base3 - 112^2 base3?

Using elimination, what is -4x+2y=-12 4x+8y=-24

What is the area of the shaded sector?

Anew landowner is interested in constructing a fence around the perimeter of her property. her property is 1,080√30 feet wide and 500√20 feet long. what is the perimeter of the property? (recall that the perimeter is the sum of each side of a shape or boundary). a 1,580√40 feet b. 5,320√5 feet c. 3,160√20 feet d. 10,640√5 feet