Question

the breadth and length of a rectangle in the ratio 4 :5 and its area 320 cm what are the breadth and length?​

Answer 1

Step-by-step explanation:

area of rectangle = l*b

320² = 4x * 5x

320² = 20x

320/20 = x

16² = x

4 = x

breadth = 4*4 = 16cm

length = 5*4 = 20cm

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Answer 2

Concept Introduction:-

A rectangle, unlike a square is the flat figure having $4$ straight sides and $4$ right angles.

Given Information:-

We have been given that the breadth and length of a rectangle in the ratio $4 :5$ and its area $320$ cm.

To Find:-

We have to find that the breadth and length.

Solution:-

According to the problem

$Area of rectangle = l*b$

$320 = 4x * 5x\\20x^2=320\\x^2=320/20\\x^2=16\\x=4$

breadth $= 4*4 = 16$cm

length$= 5*4 = 20$cm

Final Answer:-

The length and breadth of the rectangle is $20$ cm and $16$ cm respectively.

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