Benji has an ice cream cone. The ice cream cone is in the shape of a hemisphere sitting on top of a cone. What is the surface area? If the surface area of the ice cream cone is $k {\mathrm{cm}}^2$, then the value of $k$ is ..... (Round your answer to nearest integer).

A water tank is in the shape of a cone sitting on top of a cylinder. How many litres of water can it contain? If the water tank contains $x$ litres, find $x$. (Round your answer to the nearest integer)

Find the value of $\theta$: (Round the answer to $1$ decimal place)

(Write the answer without degree symbol)

Find the value of $\theta$: (Round the answer to $1$ decimal place, without degree symbol)

Find the value of $\theta$: (Round the answer to $1$ decimal place)

Find the value of $\theta$: (Round the answer to $1$ decimal place) $\left[\mathrm{Use} \cos 56.6°=0.55\right]$

Find the value of $x$: (Round off the answer to $1$ decimal place)

Find the value of $x$: (Round off the answer to $1$ decimal place)