Question

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Answer 1

Answer:

$r=\frac{44}{\pi }$

Step-by-step explanation:

$88=2\pi r$

$\mathrm{Switch\:sides}\\2\pi r=88\\\frac{2\pi r}{2\pi }=\frac{88}{2\pi }\\r=\frac{44}{\pi }\\or\\r=14.00563$

Answer 2

Answer:

2 metres

Step-by-step explanation:

Circumference = 2 × π × r

→ Substitute in the values

88 = 2 ×  $\frac{22}{7}$  × r

→ Divide both sides by 2 to isolate  $\frac{22}{7}$  and r

44 =  $\frac{22}{7}$  × r

→ Multiply everything by 7 to get rid of the fraction

308 = 22 × 7r

→ Divide the equation by 22 to isolate 7r

14 = 7r

→ Divide the equation by 7 to isolate r

2 = r

The radius of the circle with a circumference of 88 meters is 2 metres