The actual area of a rectangle was 60 centimetre square, but while measuring its length a student decreased it by 20% and increased bre

Question

The actual area of a rectangle was 60 centimetre square, but while measuring its length a
student decreased it by 20% and increased breadth by 25%. The percentage error in area,
calculated by the student is
(1 Point)​

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Jasmine 2 days 2021-10-11T06:36:13+00:00 1 Answer 0 views 0

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    2021-10-11T06:37:18+00:00

    Answer:

    a,b = 60cm2

    = A2 B2 = a,b

    a2 = a1 × 20 \ =4a1 \5

    B2 = b,t + b1 × 25/ = 5b2/ 4

    :. a2, b2 = 4a1/5 ×5b1/4 = a,b1

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