Two cubes each of 10cm edge are joined end to end . Find the surface area of resulting cuboid
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length l = 10+10 = 20cm
breadth b = 10cm
height h = 10cm
SA of cuboid = 2(lb + bh + hl)
= 2(20 × 10 + 10 × 10 + 20 × 10)
= 2 × 500
= 1000cm²
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