8x - 27 - 10 - 6x = 15
2x - 27 - 10 = 15
2x - 17 = 15
+ 17 + 17
2x = 32
X = 16

Step-by-step explanation:

8x-37-6x=15

2x=15+37

2x=52divide both sides by 2

x=26

step-by-step explanation:

there is a formula i can give you:

it is r^2*n*sin(360/n) divided by 2 where r represents the "radius" and n is the number of sides.

plug them in:

(10sqrt(3))^2*6*sin(360/6) divided by 2

100*3*6*sin(60) divided by 2

900*sin(60)

900*sqrt(3)/2

450*sqrt(3)

approx is 779.4 cm^2