The size of a computer monitor is the length of its diagonal. You want to buy a 18-in. monitor that has a width of 12 in. What is the height of the monitor? Round to the nearest tenth of an inch.

34.5 cm

step-by-step explanation:

generally for a circular segment of angle, θ° and radius r

arc length

= (θ/360) x circumference

= (θ/360) x 2πr

in our case, θ = 60°, π=3.142 and r = 33 cm

substitute into above formula

arc length

= (60/360) x 2(3.142)( 33) = 34.5 cm