Area, Perimeter & Volume: Hard Test 6

15 questions · 15 minutes

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Each square on this grid is 1 cm by 1 cm. What is the area of the shape?
A cuboid has a square base with sides of 5 cm and a height of 8 cm. What is its total surface area?
A photograph measures 15 cm by 10 cm. It is mounted in a frame that adds a border 3 cm wide all the way around it. What is the perimeter of the outside edge of the frame?
A rectangle has an area of 12 cm². Every side is then made 3 times longer. What is the area of the new rectangle?
A rectangle measures 12 cm by 8 cm. A triangle with a base of 12 cm and a height of 8 cm is cut out of it. What area of the rectangle is left?

To find a missing side from a given area, divide rather than multiply - it is the inverse of the formula you already know.
Area is measured in squared units and volume in cubed units. Writing cm instead of cm squared loses marks that the arithmetic had already earned.