Question

6. Find the length of a rectangle whose
perimeter is 320 cm and breadth is 70​

Answer 1

Answer:

Breadth = 70cm

Perimeter = 320cm

Length = (Perimeter - 2×Breadth)/2

= (320-2×70)/2

= (320-140)/2

= 180/2

= 90

Length is 90cm

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Answer 2

Answer:

length is 90cm

Explanation:

perimeter =2(l+b)

320=2(x+70)

$x + 70 = \frac{320}{2} \\ = x + 70 = 160 \\ = x =160 - 70 = 90 \\ = x = 90$

so the length is 90cm

hope its helpful