Question

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Answer 1

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1) The length of lid of a rectangular box = 40 cm

   The Breadth of lid of rectangular box = 10cm

Perimeter = 2 × (Length + Breadth)

Perimeter = 2 × (40cm + 10cm)

Perimeter = 2 × 50cm = 100cm or 1 m

Answer:- The required length of the top is 100cm

2) Length of the table top = 2m 25cm = 2.25cm

   Breadth of the table top = 1m 50cm = 1.50m

Perimeter of the table top = 2 × (length + breadth)

Perimeter = 2 × (2.25m + 1.50m)

Perimeter = 2 × 3.75m  

Perimeter = 7.50m

Answer:- 7.50 is the perimeter of the tabletop

3) The length of the wooden strip = 32cm

   The breadth of the wooden strip = 21cm

Perimeter = 2 × (length + breadth)

Perimeter = 2 × (32cm + 21cm)

Perimeter = (2 × 53cm) = 106cm

Answer:- The required length of the wooden strip is 106cm

4) Length of the rectangular land = 0.7km

   Breadth of the rectangular land = 0.5km

Perimeter of the land = 2 × (0.7km + 0.5km)

Perimeter = 2 × 1.2km = 2.4km

Perimeter of the land is 2.4km

Each side of the land to be fenced with 4 rows of wires.

Length of the wire needed = 4 × 2.4km = 9.6km

Answer:- 9.6km of the length wire needed.

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