A rectangular prism has a top that is 15cm by 20 cm and a height of 4 cm. An ant begins at one corner of the box and walks along the edges. It touches all eight corners. What is the shortest distance in cm that the ant may travel?

Answer: (a)   cm (only numbers).

Mary shades various shapes on square sheets of paper as shown.

How many of these shapes have the same perimeter as the sheet of paper itself?

Answer: (a)   shapes (only numbers).

The shape on the right is made up of three rectangles, each measuring 3cm by 1cm. What is the perimeter of the shape?

Answer: (a)   cm (only numbers).

The small square has the side length of 2 cm. What is the perimeter of the whole figure?

Answer: (a)   cm (only numbers)

The figure shown is built from four 1x1 – squares, four 2x2-squares, three 3x3-squares and one 4x4-square. What is the perimeter of the figure in cm?

Answer: (a)   cm (only numbers)

The net shown at the figure on the right is cut out and folded to form a cube. Which face is then opposite the face marked x?

Answer: face (a)  

Answer: (a)   small cubes (only numbers)

A rectangle with a perimeter of 34 cm was divided into two smaller rectangles with perimeters 28 cm and 30 cm, as shown in the figure. What is the area of the big rectangle?

Answer: (a)   cm² (only numbers)