four cubes of side 7cm each are joined together to form a cubiod.find the surface area of the resulting cubiod?
Answers
Answered by
1
Answer:
490 cm
Step-by-step explanation:
side of cube = 7cm
when they joined together to form a cuboid
length is changes = 28cm
breadth and height is same as cube = 7cm
T.S.A. of cuboid =
= 2 (28×7 + 7×7 + 7×28)
= 2 ( 196 + 49 + 196)
=490
t.s.a of cuboid is
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Answered by
2
Answer:
882 sq. cm
Step-by-step explanation:
Dimensions of the formed cuboid
Height=7cm
Length=28cm
Breadth=7cm
Surface area of a cuboid=2(lb+bh+lh)
=2(28x7+7x7+7x28)
=2(196+49+196)
=882 sq. cm
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