Find the area of the semicircle.

76.93 units^2

Step-by-step explanation:

area of circle = πr² but since its half circle we multiple the area by 1/2 so the new formula is

area = 1/2 πr²

r = d/ 2

r = 14 / 2 = 7

plug in the numbers:

area = 1/2 * 3.14 * 7²

area of half circle is 76.93 units ^2

it will cost dollar $540

the living room is 3 which means if we divide 325/3 then we get $108

therefore if 1part of the living room cost $108 and 3 costed $325

then total 5part of the room will cost 5*108 which gives $540