A gangplank is a narrow ramp used for boarding or leaving a ship. It stretches from the ship down to the dock and provides guest with a safe way to board and exit a
ship. The maximum safe angle of elevation for a gangplank is 20°. Suppose a
gangplank is 10 feet long. What is the closest a ship can come to the dock for the
gangplank to be used?

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

-12 > a

step-by-step explanation:

-11 > 1 + a

subtract 1 from each side

-11 -1> 1 -1+ a

-12 > a

-1   1/6.   you dont subtract the denominators

step-by-step explanation: