A reservoir in the form of the frustum of a right circular cone contains \( 44 \times 10^{7} \) ...

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A reservoir in the form of the frustum of a right circular cone contains \( 44 \times 10^{7} \) litres of water which fills it completely. The radii of the bottom and top of the reservoir are 50 metres and 100 metres respectively. Find the depth of water and the lateral surface area of the reservoir. (Take: \( \pi=22 / 7 \) )
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