Question

Three shapes have perimeters of 36 cm each. Which combination is possible?

Options

• Triangle (10 cm sides), Rectangle (10 × 8 cm), Square (9 cm sides)

• Triangle (12 cm sides), Rectangle (13 × 5 cm), Square (9 cm sides)

• Triangle (15 cm sides), Rectangle (15 × 6 cm), Square (12 cm sides)

• Triangle (8 cm sides), Rectangle (12 × 4 cm), Square (6 cm sides)

Answer 1

Triangle (12 cm sides), Rectangle (13×5 cm), Square (9 cm sides)

Explanation:

Checking each: Triangle = 3 × 12 = 36 cm; Rectangle = 2 × (13 + 5) = 36 cm; Square = 4 × 9 = 36 cm.

All equal 36 cm.