Find the length of AB. B(9, 10)
12
11
10
9
8
7
6
5
4
3
2
A(4.2)
9 10 11 12
O A. 89 units
OB. 13 units
O C. About 3.6 units
O D. About 9.4 units

y= -

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