Question

a wooden box has dimensions 4 m,3m,12m.Calculate......

Answer 1

144= volume
48, 36= area of walls
surface =12
diagonal=5
28.8 rupees

Answer 2

let l=4,b=3 and h=12

volume=lbh=4*3*12=144

area of walls =surface area=2(lb+bh+hl)=2((4*3)+(3*12)+(12*4))=168

length of diagnol=√(l²+b²+h²)

                              √(4²+3²12²)=13

(v)  volume of box is 144 m³

If it cost 20 per m³ then it would cost 144*20 =2880