Question

find the radius of a circle whose circumference is 176cm

Answer 1

circumference formula is 2πr
circumference=2πr
176=2×22÷7×r
176×7÷2×22=r
please do the calculation because I am short of time because I am preparing for my exam sorry if this helps you please mark me as a brain liest and please do not forget to follow me

Answer 2

Answer:

The radius of the circle is, 28 cm

Step-by-step explanation:

Circumference(C) of the circle is given by:

$C = 2 \pi r$             ....[1]

where,

r is the radius of the circle.

As per the statement:

circumference of the circle is 176 cm

⇒$C = 176 cm$

Substitute in [1] we have;

$176 = 2 \pi r$

Divide by 2 to both sides we get;

$88 = \pi r$

Use value of  $\pi = \frac{22}{7}$

then;

$88=\frac{22}{7}r$

Divide by 22 to both sides we have;

$4 = \frac{r}{7}$

Multiply both sides by 7 we have;

28 = r

or

r = 28 cm

Therefore, the radius of the circle is, 28 cm