Question

A circular copper wire of radius 14cm is bent to form a rectangle. If the breadth and the length of the rectangle are in the ratio of 3:8 resp. what
is the length of rectangle ? (in cm2)​

Answer 1

Answer:

8cm

Step-by-step explanation:

Let the breadth of rectangle = 4x

Length of rectangle = 7x

According to question,

2xr=2×(l+b)

2×227×7=2×(4x+7x)

22 = 11x

x = 2

The breadth of rectangle = 4×2=8cm

Answer 2

Step-by-step explanation:

• l+b= 87 take this as equation 1
• b/l=3/8
• 8b-3l=0 take this second equation
• solving this two using elimination we get b=23cm
• l=64cm.
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