Question

7. Find the perimeter of a rectangle whose length and breadth are

a) 150cm and 100cm b) Length 14m and breadth 9m

8. Find the area of a Rectangle whose

a) Length = 17m and breadth = 8m

b) Length = 21cm and breadth 16cm​

Answer 1

Answer:

Hey!

Perimeter of rectangle = 2(l+b)

7-

a) Length - 150 cm

Breadth - 100 cm

P = 2(150 +100)

= 300 + 200

= 500 cm

b) length - 14 m

Breadth - 9m

perimeter = 2(14 + 9)

= 28 + 18

= 46 m

8 -

Area of rectangle - length × breadth

a) length - 17 m

Breadth - 8 m

= 17 × 8

$= 136 m^{2}$

b) length - 21 cm

breadth - 16 cm

A = 21 × 16

$= 336 cm^{2}$

Hope it helps u :)

Answer 2

AnsWeR

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Perimeter = 200cm

Length = 70cm

P=2(l+b) P=2l+2b

200=2×70+2b

∴2b=200−140

∴2b=60

b=30

Breadth = 30cm

336cm²