exam Maths Puzzle Numerical Ability

i have to find the volume of a right cone with a radius 6 cm and height 10 cm.
i have to leave answer in terms of pie.

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exam Other Question

A brick patio is twice as long as it is wide. It is bordered on all sides by a garden 1.5m wide. Find the dimensions of the patio if the area of the garden is 54m2. When f(x) = 2x to the -1, g(x)= 2x + 5 and h(x) = x-4 over 2....... can you help me solve h(f(x))