The reduced row-echelon form of the augmented matirx of a system of equations is given. find the solution of the system.4,12,4) c. (19,2,5) b. (7,14,5) d. (-11,22,5)

dude   i don't even know. i've been trying for hours.

step-by-step explanation:

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