A vertical stick is 10meters high. what length of shadow will it cast when the altitude of the sun is 45°?​

answer is 10 meters also

tan 45 = ab/bc : 1 = 10/bc : bc = 10

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