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If an edge of a square is increased by 10%,then by how much will its surface area be increased?
 one year ago
 one year ago
If an edge of a square is increased by 10%,then by how much will its surface area be increased?
 one year ago
 one year ago

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manishsatywaliBest ResponseYou've already chosen the best response.2
increasing a certain thing 'to' or 'by' do u understand the differnce in both of them ?????
 one year ago

manishsatywaliBest ResponseYou've already chosen the best response.2
'by' means certain fraction of total is increased or decreased here in this case it is increased
 one year ago

manishsatywaliBest ResponseYou've already chosen the best response.2
it means here u hav to increase or add the that fraction (10/100) to the initial edge of square
 one year ago

manishsatywaliBest ResponseYou've already chosen the best response.2
that is 10/100 = 0.1 (fraction of total )
 one year ago

manishsatywaliBest ResponseYou've already chosen the best response.2
do u knw the formula of surface area of square?
 one year ago

manishsatywaliBest ResponseYou've already chosen the best response.2
k gud u knw that
 one year ago

manishsatywaliBest ResponseYou've already chosen the best response.2
now see let us suppose we hav the edge of sq. initially be 1 ..then by the defination of 'by' that i hav told u above u can add fraction (0.1) to 1 that is nw the final edge length is 1.1
 one year ago

manishsatywaliBest ResponseYou've already chosen the best response.2
follow till here ?
 one year ago

manishsatywaliBest ResponseYou've already chosen the best response.2
now tell me what is the surface area of sq. with new edge length 1.1????????
 one year ago

manishsatywaliBest ResponseYou've already chosen the best response.2
m singh plss reply??????????/
 one year ago

msinghBest ResponseYou've already chosen the best response.0
wait i m understanding vat u did
 one year ago

ZeHanzBest ResponseYou've already chosen the best response.0
Area of square with edge a is a². Edge of new square is a+10% of a = a + 0.1a = 1.1a. Area of new square is (1.1a)²=1.21a² = a² + 0.21a² = a² + 21% of a². So it is 21 % more.
 one year ago

manishsatywaliBest ResponseYou've already chosen the best response.2
@ZeHanz PLS. DON'T GIVE DIRECT ANSWER
 one year ago

ZeHanzBest ResponseYou've already chosen the best response.0
@manishsatywali : Just thought you had done enough to explain. Sometimes it is better to write the whole thing down, to show the steps. If I had done this right away, I would agree with you ;)
 one year ago

manishsatywaliBest ResponseYou've already chosen the best response.2
bt i also encourage the way u deliver that in steps...........gd to see that
 one year ago

msinghBest ResponseYou've already chosen the best response.0
i think u both have well explained @manishsatywali and @ZeHanz
 one year ago

manishsatywaliBest ResponseYou've already chosen the best response.2
now have you got the idea...........i mean u reach the final answer any difficulty with the method??????????
 one year ago

msinghBest ResponseYou've already chosen the best response.0
no of course thank u @manishsatywali and @ZeHanz
 one year ago

manishsatywaliBest ResponseYou've already chosen the best response.2
@ZeHanz .........our combo helped @msingh......it's the best we can make out of openstudy
 one year ago

ZeHanzBest ResponseYou've already chosen the best response.0
@manishsatywali: thank you!
 one year ago
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