Select the correct answer from each drop-down menu. the sides of abc are 30 units, 40 units, and 60 units long. the corresponding sides of axyz are r times as long as the sides of aabc. if the area of abc is n square units, the area of axyz is the expression that gives the perimeter of axyz is square units.

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing

step-by-step explanation:

1. a^4+8a^3+24a^2+32a+16

2.y^8+8y^7+28y^6+56y^5+70y^4+56y^3+28y^2+8y+1

3.x^6-3x^4y^2+3x^2y^4-y^6