A cylindrical tank has a radius of 7 m and a height of 11 m. How many litres of water can it hold? (Use π = 22/7)
16,94,000
The volume of a cylinder is \(V = \pi r^2 h\).
Substitute \(r = 7\) m, \(h = 11\) m and \(\pi = \frac{22}{7}\): \(V = \frac{22}{7} \times 7^2 \times 11 = \frac{22}{7} \times 49 \times 11\).
\(V = 22 \times 7 \times 11 = 1694\) m3.
Since 1 m3 = 1000 litres, \(1694 \times 1000 = 1694000\) litres.
Hence, the tank can hold 16,94,000 litres of water.
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Important Questions from 3-D Mensuration
Find the total surface area of a closed cylinder having a base radius of 70 m and a height of 110 m. [Use π = \(22\over7\)]
- The curved surface area of a cylinder is half of its total surface area. If its height is 195 cm, then find its diameter (in cm).
The diameter of the base and slant height of a right circular cone are 30 cm and 113 cm, respectively. Find the volume (in cm³) of the given cone.
(Use $\pi = \frac{22}{7}$)- A cylindrical rod has an curved surface area of $4,900 \text{ cm}^2$. If the length of the rod is 97 cm, then the radius (in cm) of the rod, correct to two places of decimal, is:
Take $\pi = \frac{22}{7}$ - The volume (in $m^3$) of a cube, each of whose edges is 42 m, is:
