Question

Carlos is shopping for a cap. He knows that his head circumference is 22inches. Which size of cap should he buy to fit his head best?

Answer 1

Step-by-step explanation:

The circumference of Carlos' head is 22 inches. He want to but a cap. He must know the size of the cap. The formula of circumference of circular shaped object is given by :

$C=2\pi r$

r is radius of cap

$r=\dfrac{C}{2\pi}\\\\r=\dfrac{22}{2\pi}\\\\r=3.5\ \text{inches}$    

or

Diameter of cap, D = 2 r = 7 inches

So, he must buy a cap that have diameter of 7 inches.