The length and breadth of a cuboid are in the ratio 4:5 . The height and total surface area of the cuboid are 18 cm and 3384 cm^2respectively . Find its length and breadth .
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total surface area=(lb+bh+hl)
total surface area=(4x.5x+5x.18+18.4x)
total surface area=(20x square+90x+72x)
3384. =20x square+162x)
3384÷162. =20x square
20.89=20x square
√20.89÷20x
total surface area=(4x.5x+5x.18+18.4x)
total surface area=(20x square+90x+72x)
3384. =20x square+162x)
3384÷162. =20x square
20.89=20x square
√20.89÷20x
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