Answer:
1) 18
2) 6
3) 12
4) 12
5) 7
6) 9
Step-by-step explanation:
1) 2*x = 6^2, 2x=36, x = 18
2) 2*(x+2) = 4^2, 2x+4 = 16, x = 6
3) 10^2 = 5 * (x+8), 100 = 5*(x+8), x = 12
4) The altitude is 4sqrt3 using pythagorean, (4sqrt3)^2 = 4*x, 48 = 4*x, x=12
5) Altitude is sqrt63 using pythagorean, (sqrt63)^2 = 9x, x = 7
6) Altitude is sqrt72, sqrt(72+9) = 9
