1.

Box is in the shape of cuboid have the dimension of 30 cm × 20 cm × 15 cm. If the top of the box is cut and remaining surface need to be paint. The surface area of the cuboid without top surface is ________ m2.1). 0.152). 0.213). 0.264). 0.12

Answer»

SURFACE area of cuboid = 2(lb + BH + hl)

Where, l = length of cuboid = 30 cm

b = BREADTH of the cuboid = 20 cm

h = height of the cuboid = 15 cm

∴ Surface area without top = 2(bh + lh) + bl = 2(20 × 15 + 30 × 15) + (30 × 20) = 2100 cm2 = 0.21 m2


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