Question

a wire if length 1320 cm is made into circular frames of radius 7cm each how many frames can be made​

Answer 1

Answer: 30 frames

Step-by-step explanation:

Given

Length of wire = 1320 cm

Circular frame of radius 7 cm to be made

as we know

circumference of circle = $2\pi r = 2\times \dfrac{22}{7} \times 7 = 44cm$

Number of frames $=\dfrac{\text{Total length of wire} }{\text {Circumference of circle} }= \dfrac{1320}{44} = 30$

Hence, 30 frames can be made from 1320 cm wire of radius 7 cm

Answer 2

Answer:

$\red { Number \:of \: circular \:frames \:made}$

$\green { = 30}$

Step-by-step explanation:

$Given \: length \: of \: a \: wire (l)= 1320 \:cm$

$Radius \: of \: each \: frame (r) = 7\:cm$

$Length \: of \: each \: frame (P)\\= Circumference \: of \: a \:circle \\= 2\pi r$

$Let \: number \: of \: frames \: made = n$

$n = \frac{Length \:of \:the \:wire }{Circumference \:of \:a \:frame }$

$= \frac{1320}{2\pi r}\\= \frac{1320}{2 \times \frac{22}{7} \times 7}\\= \frac{1320}{44}\\= 30$

Therefore.,

$\red { Number \:of \: circular \:frames \:made}$

$\green { = 30}$

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