A cube is cut into smaller cubes such that each edge if cube is increased by 50% ,find the % increase in surface area?
Stacey Warren - Expert brainly.com
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well, then increase of 50% means that new edge is 1.5 times the older one.
how u get that @decidedlypretentious
\[x + 50/100 x = 150/100x\]
btw, have a lookie at your question again, does it say decreased or increased? cause if its cut into smaller cubes... ehh
question is lyk dat only
Assuming the question doesn't mean the first bit.
I'd say then calculate surface area for both cases. (Final SA-Initial SA)/Initial SA * 100 should give you the answer
okayyyy.....do you ne shortcut key for this typ of questions.
n yeah definately it will give the ans..thnkyou so mch :)
Let the edge = a cm
So increase by 50 % = a + a/ 2 = 3a / 2
TSA of original cube = 6 a 2
TSA of new cube = 6 ( 3a/ 2) 2
= 6 x 9a 2 / 4 = 54a 2 / 4 = 13.5a 2
Increase in area = 13.5a 2 - 6 a 2
= 7.5a 2 Increase % = ( 7.5a 2 / 6 a 2 ) x 100 = 125%