The lateral surface area and total surface area of cuboid are 238 cm2 and 382 cm2. If the height of the cuboid is 7cm,find the volume of the cuboid.
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Answered by
12
Answer:
2h (I + b) = LSA
2h (I +b) +2 Ib=TSA
2x7 (I +b) =238
I+b=238 / 14=17
I+b=17
2lb =382-238 = 1 44
(I+b)^2-(I-b)^2 = 4 Ib
17^2-(I-b)^2 =288
289-(I-b)^2 =288
(I-b)^2 = 1
I-b=1
I+b=17
solving.
2I=18
I=9
I-b=1
9-b=1
b=8
I=9,b=8. h=7
vol=Ix bxh=9x8x7=504 cm2
Answered by
6
Answer:
504 cm2.
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