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3 years ago

A circle with a radius of 3cm sits inside a circle with a radius of 11cm.

Mathematics

1 answer:

lozanna [386]3 years ago

8 0

Answer:

Area of shaded region = 351.68 cm²

Step-by-step explanation:

Area of a circle = πr²

where r = radius = 3.14

Area of bigger circle = 3.14 × 11²

= 3.14 × 11 × 11

= 379.94cm²

Area of smaller circle = 3.14 * 3²

= 3.14 × 3 × 3

= 28.26cm²

Area of shaded region = Area of bigger circle - Area of smaller circle

= (379.94 - 28.26) cm²

= 351.68 cm²

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During a spring clearance sale, Sears advertise 1/4 off the list of Model II microwave ovens and an additional 1/5 off the sale

ozzi

Answer:

$ 75.

Step-by-step explanation:

From the information above,

List price of model II = $240

Sale price of the clearance sale is 1/4 off the list price of Model II microwave oven and additional 1/5 of the sale price for oven that are scratched and dented.

Therefore,

Let the sale price be X,

= (1/4)*(list price) + (1/5)*X

X = (1/4)*(240) + (1/5)*X

X = 60 + (1/5)X

Solving for X,

X - (1/5)X = 60

(4/5)X = 60

X = (60*5)/4

= $75.

4 0

2 years ago

drinking 6 fluid ounces of milk provides 202.5 mg of calcium how many fluid ounces of milk are required to provide 52.5 mg of ca

Ymorist [56]

Answer:

2 fluid ounces.

Step-by-step explanation:

202.5 divided by 6 = 33.75 (1 fluid ounce)

33.75 x 2 = 67.5. (68)

5 0

3 years ago

Find the ratio of hearts stars

Katyanochek1 [597]

hearts:stars

the ratio

5 0

3 years ago

The unit rate of the proportional relationship y= 2x is

Likurg_2 [28]

We have that the unit rate is 2 [Option B].

***Explanation***

We have that a proportional relationship is characterized for having the form:

$a=kb$

Here a and b are the values that are proportional to one another and k is the constant of proportionality.

In our case we are given:

$y=2x$

Here x & y are the proportional values and 2 is the constant of proportionality.

And, from properties of division, we have that:

$\frac{2}{1}=2$

7 0

9 months ago

Pls pls help. i am begging u ill give brainliest

Romashka [77]

The answer is 4/18

——

4 0

2 years ago

Read 2 more answers