Question

A wire of length 1320 cm is made into circular frames of radius 7 cm each.How many frames can be made?

Answer 1

The number of circular frames that can be made is 30.

Step-by-step explanation:

The length of the wire = 1320 cm

Radius of circular frames = 7 cm

Let x circular frames can be made.

Circumference of each circular frame is given by

$C=2\pi r\\\\C=2\cdot\frac{22}{7}\cdot7\\\\C=44cm$

Now, circumference of x circular frames should be equal to the length of wire.

Therefore, we have the equation

$44x=1320$

Divide both sides by 44

$x=\frac{1320}{44}\\\\x=30$

Hence, 30 circular frames can be made.

#Learn More:

A circular mirror of radius 21 cm is surrounded by a circular frame of width 3.5 cm find cost of making the frame of Rs 1.50 per cm square

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