Question

Ms. Marine calculated that her hoop earring has a diameter of 3.5 centimeters. What is the area of her earring (round to the hundredths place)?

Answer 1

Answer:

Area, $A=9.62\ cm^2$

Step-by-step explanation:

We have,

Diameter of earring, d = 3.5 cm

It is required to find the area of her earring. The earring is in the shape of a circle. The area of a circle is given by :

$A=\pi r^2$

r is radius of circle

$A=\dfrac{22}{7}\times (\dfrac{3.5}{2})^2\\\\A=9.625\ cm^2$

or

$A=9.62\ cm^2$

So, area of her earring is $9.62\ cm^2$.