What is the measure of angle 1 ? pls i need help ​

This is a chord, chord angle problem.

Angle 1 = (50 + 56)/2. This leads to 53 degrees.

58

Step-by-step explanation:

(50 + 56)/2 = 116/2 = 58

b

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