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3 years ago

- Erin wants to purchase 3 CDs for $10 each. She has $20. How much

Mathematics

2 answers:

son4ous [18]3 years ago

7 0

3 cd at 10 each is 30 dollars. But Erin only has 20 so she would need 10 more dollars in order to purchase all cd.

Answer:T

Step-by-step explanation:

FromTheMoon [43]3 years ago

3 0

Answer:

$10

Step-by-step explanation:

If Erin wants 3 CD's at $10 a piece, that is $30 total. She has $20 which means you find the difference. Total needed: $30 - Money in hand: $20 = $10

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A circle is a figure bounded by a curved side which is referred to as circumference. Thus the area of the shaded region is option D. 81.65.

A circle is a figure bounded by a curved side which is referred to as circumference. Some of its parts are radius, diameter, sector, arc, etc.

The area of a circle can be determined by the given expression:

Area = π $r^{2}$

where r is the radius of the circle and π = $\frac{22}{7}$

So, the area of the shaded region can be determined as:

Area of the shaded region = area of the larger circle - area of the smaller circle

Area of the shaded region = π $(6.8)^{2}$ - π $(4.5)^{2}$

= π (46.24 - 20.25)

= $\frac{22}{7}$ x 25.99

= $\frac{571.78}{7}$

Area of the shaded region = 81.683

Thus the appropriate answer to the question is option D. 81.65.

For more clarifications on the area of a circle, visit: brainly.com/question/3747803

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