The height of a cone is 3m and the diameter of its base is 8m. Then its&nbsp;

The total surface area of a cone is 770<math><mrow><mtext> </mtext><msup><mrow><mtext>cm</mtext></mrow><mtext>2</mtext></msup></mrow></math><xml> </xml> . If its slant height is four times the radius of the cone, the diameter of the cone is

If the diagonal of a cube is <math><mrow><mfrac><mrow><msqrt><mn>3</mn></msqrt></mrow><mi>s</mi></mfrac></mrow></math><xml> </xml>, then its volume is

If  the height of a cone is doubled, then its volume is increased by 

The base of a right pyramid is a square of side 5 cm. The volume of the pyramid is what if its height is 12 cm?

A rectangular sheet of paper <math><mrow><mn>22</mn><mtext>cm </mtext><mo>×</mo><mtext>15cm</mtext></mrow></math><xml> </xml> is rolled along its length to form a hollow cylinder. The radius of the cylinder is

The height of a cone is 3m and the diameter of its base is 8m. Then its

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