Practice30Create account

A square photo mount is edged with 92 cm of gold tape, with none left over. How long is each side of the mount?

Class 6MensurationMensuration
  • A22 cm
  • B23 cm
  • C46 cm
  • D88 cm

Step-by-Step Solution

The tape is the perimeter, so side = 92 ÷ 4 = 23 cm. Dividing by 2 gives 46 cm, which is only half the boundary and not one side. Subtracting 4 to get 88 cm treats the four sides as something to take away rather than to share.
Answer: B) 23 cm

Key idea: Perimeter — the journey around

Imagine an ant walking around the edge of a shape and returning to where it started. The total distance it walks is the perimeter. For any closed shape: **add up every side**. Order doesn't matter; just include each side once.

For a triangle with sides 3, 4, 5: perimeter = 3 + 4 + 5 = 12. For an irregular shape: add every edge.

Master this chapter in 30 minutes a day.

Don't just memorise the answer — build a daily practice habit.

Practice 5 Similar Questions Free →

All Mensuration practice questions

More Class 6 Mensuration practice

A triangular kite has a perimeter of 40 cm. Two of its sides are 13 cm and 15 cm. How…An isosceles triangular pennant has a perimeter of 74 cm and a base of 20 cm. How long…A four-sided badge has a perimeter of 68 cm. Three of its sides measure 14 cm, 21 cm and…Each side of a regular polygon measures 9 cm and its perimeter is 45 cm. Which polygon…The boundary of an L-shaped verandah runs, in order, 10 m, 9 m, 4 m, 5 m, 6 m and 14 m…