The surface area of a cuboid is 64 m ². Find its breadth if both its length and height equal 4 m.
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Step-by-step explanation:
surface area of cuboid = 2(lb+bh+lh)
64 = 2(4×b + b×4 +4×4)
= 64 = 2(4b+4b+16)
= 64 = 8b+8b+32
= 64-32 = 16b
= 32/16 = b
= b = 2 m
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