Feb 12-16

Grade 8 Problem of the Week Feb. 12-16

Show all your work

1. Owen’s birthday cake has dimensions of 40 cm by 25 cm by 9 cm. What is the surface area that would be covered in icing? (no icing on the bottom of the cake)

2. A cube shaped box has a side length of 4.2 cm. The outside of the box is covered with felt. How much felt would be needed to cover the box?

3. Find the outer surface area of a box that has an open top and the dimensions 15 cm by 15 cm by 10 cm.

4. If a cube has a surface area of 294 square centimetres. What would be the dimensions of the cube?