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Ex 13.1 Q 2

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Ex 13.1 Q 2

    • Posted by Varun Tiwari 2 years, 10 months ago

    CBSE > Class 09 > Mathematics
    • 1 answers

    K_Hushii 🍁 2 years, 10 months ago

    Given, length =5m , breadth =4m and height =3m Acc to question Area of the four walls =lateral surface area . 2(bh +hl) = 2h (b+l) =2×3 (4+5) = 2×9×3 =54sq Area of ceiling =l×b =5×4 =20 m/sq Total area of wall and ceiling of the room = 20 +54= 74m sq Now cost of white washing for 1msq = ₹7.50 Cost of white washing for 74m sq = 74 ×7.50 = ₹555

    1Thank You

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