A box made of sheet metal cost Rupees 2820 at the rate of rupees 30 per square metre if the box is 5 M long, 4 m wide find its height
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area of box t.s.a= 2820/30=94 meter square
t.s.a of a box =2(lb+lh+BH)
94=2(5×4+5×h+4×h)
94=10×8+10×2h+8×2h
94=80+20h+16h
94=80+36h
94-80=36h
14=36h
h=14/36
h=7/18 m
area of box t.s.a= 2820/30=94 meter square
t.s.a of a box =2(lb+lh+BH)
94=2(5×4+5×h+4×h)
94=10×8+10×2h+8×2h
94=80+20h+16h
94=80+36h
94-80=36h
14=36h
h=14/36
h=7/18 m
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