Question

How many 25cm diameter cake tins will fit into 600mm by 500mm oven space

Answer 1

The surface of the oven space is 600 × 500 = 300000 mm^2 = 3000 cm^2;
The surface oh a cake tins is π × (25^2) = 625π ≈ 1963 cm^2;
3000 ÷ 1963 ≈ 1.5;
The anser is 1 cake tins fit into oven space.