Find the perimeter of a rectangle whose:

(i) length = 40 cm and breadth = 35 cm

(ii) length = 10 m and breadth = 8 m

(iii) length = 8 m and breadth = 80 cm

(iv) length = 3.6 m and breadth = 2.4 m

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1 Answers

(i) length = 40 cm and breadth = 35 cm

∴ Perimeter = 2 (length + breadth)

= 2 (40 cm + 35 cm)

= 2 x 75 cm

= 150 cm = 150/100

= 1.5 m

(ii) length = 10 m and breadth = 8 m

∴ Perimeter = 2 (length + breadth)

= 2 (10 m + 8 m)

= 2 x 18 m = 54 m

(iii) length = 8 m and breadth = 80 cm

Length = 8 m

Breadth = 80 cm = 80/100 m = 0.8 m

∴ Perimeter = 2 (length + breadth)

= 2 (8 m + 0.8m)

= 2 x 8.8 m = 17.6 m

(iv) length = 3.6 m and breadth = 2.4 m

∴ Perimeter = 2 (length + breadth)

= 2 (3.6 m + 2.4 m)

= 2 x 6 m = 12 m

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