42.43 (2 dec places)
What is the length of the longest line that can be drawn in a 20x12x9 box?
Please explain your working?
A unit sphere (radius = 1) is out on a flat plane in the rain. Find the side length of the largest cube that can hide underneath it and not get wet.
A hemispherical is made of steel, 0.25cm thick. The inner radius of the bowl is 5 cm. find the outer curved surface area of the bowl and also find the total surface area and volume.
The figure below consists of a rectangle and two attached circular sectors. All length dimensions are in meters. The area of the entire shape is 36 m2. Show the perimeter p is given by p = 2x + 72/x for x > 0 and that p is minimum when x = 6.
