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msingh

  • 3 years ago

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

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  1. manishsatywali
    • 3 years ago
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    increasing a certain thing 'to' or 'by' do u understand the differnce in both of them ?????

  2. manishsatywali
    • 3 years ago
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    tell me asap

  3. msingh
    • 3 years ago
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    by

  4. manishsatywali
    • 3 years ago
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    'by' means certain fraction of total is increased or decreased here in this case it is increased

  5. manishsatywali
    • 3 years ago
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    it means here u hav to increase or add the that fraction (10/100) to the initial edge of square

  6. manishsatywali
    • 3 years ago
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    that is 10/100 = 0.1 (fraction of total )

  7. manishsatywali
    • 3 years ago
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    do u knw the formula of surface area of square?

  8. msingh
    • 3 years ago
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    6(s*s)

  9. msingh
    • 3 years ago
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    only s*s

  10. manishsatywali
    • 3 years ago
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    k gud u knw that

  11. manishsatywali
    • 3 years ago
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    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

  12. manishsatywali
    • 3 years ago
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    follow till here ?

  13. msingh
    • 3 years ago
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    k

  14. manishsatywali
    • 3 years ago
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    now tell me what is the surface area of sq. with new edge length 1.1????????

  15. manishsatywali
    • 3 years ago
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    m singh plss reply??????????/

  16. msingh
    • 3 years ago
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    wait i m understanding vat u did

  17. ZeHanz
    • 3 years ago
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    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.

  18. manishsatywali
    • 3 years ago
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    @ZeHanz PLS. DON'T GIVE DIRECT ANSWER

  19. ZeHanz
    • 3 years ago
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    @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 ;)

  20. msingh
    • 3 years ago
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    (1.1a)^2

  21. manishsatywali
    • 3 years ago
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    bt i also encourage the way u deliver that in steps...........gd to see that

  22. msingh
    • 3 years ago
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    i think u both have well explained @manishsatywali and @ZeHanz

  23. manishsatywali
    • 3 years ago
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    now have you got the idea...........i mean u reach the final answer any difficulty with the method??????????

  24. msingh
    • 3 years ago
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    no of course thank u @manishsatywali and @ZeHanz

  25. manishsatywali
    • 3 years ago
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    @ZeHanz .........our combo helped @msingh......it's the best we can make out of openstudy

  26. ZeHanz
    • 3 years ago
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    @manishsatywali: thank you!

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