The lengths of a triangle are given below. Is the the triangle obtuse, acute, or right? 7, 13, 16

This is an Acute triangle because all 3 angles are less than 90

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