) A rectangular piece of cardboard of dimensions 42 cm x 32 cm is used to make a box. Squares of size 6 cm x 6 cm are cut out from all four corners (see figure). The remaining portion is folded to make a box. The inner surfaces of the box are painted. Find the total area of the painted surfaces.
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Answer:
1200 cm^2
Step-by-step explanation:
Total area of cardboard = 42 x 32
= 1344cm^2
Area of 4 squares = 4 x side^2
= 4 x 6 x 6
= 144cm^2
Remaining portion = Area of inner surface of box [Shaded portion]
= 1344 - 144
= 1200 cm^2
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Answer:
1200 is the right answer
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