Question

A circular track has outside circumference of 484 m. If the width of the track is 7 m, what is the unside circumference?​

Answer 1

Correct question

A circular track has outside circumference of 484 m. If the width of the track is 7 m, what is the unside circumference?

Answer:

Inside circumstance = 440 m

Step-by-step explanation:

given that,

A circular track has outside circumference of 484 m.

we know that,

circumference of a circular track

= 2πr

so

2πr = 484

2 × 22/7 × r = 484

r = 484 × 7/44

r = 11 × 7

r = 77 m

now,

given the width of the track = 7 m

so,

radius of the internal field = 77 - 7

= 70 m

now,

internal circumstance

= 2 × 22/7 × 70

= 440 m

now,

outside circumference = 484 m

and

inside circumstance =

440 m

Answer 2

Answer:

The circumference of inside circle is 440

Step-by-step explanation:

Explanation because

We have formula

$circumference = 2\pi \: r$

We have

$r = 70 \: for \: inside \: circle$

$therefore \\ by \: using \: formula \\ \: \: = 2\pi \: r \\ \: \: = 2 \times \frac{22}{7} \times 70 \\ = 2 \times 22 \times 10 \\ = 44 \times 10 \\ = 440$

the unside circumference is 440 m.