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brilliants [131]
2 years ago
5

Find the area of a circle with radius, r = 66cm. give your answer rounded to 3 sf.

Mathematics
1 answer:
beks73 [17]2 years ago
5 0

The area of a circle with a radius of 66 is 68.45.1cm^2.

We have given that,

The area of a circle with a radius, r = 66cm.

<h3>What is the formula for the area of the circle?</h3>

A=\pi r^2

Use the given value in the above formula

A=\pi (66)^2\\A=6845.1cm^2

The area of a circle with a radius of 66 is 68.45.1cm^2.

To learn more about the area circle visit:

brainly.com/question/28956

#SPJ1

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lesya [120]
Okay first I think you might’ve highlighted incorrectly. You want to make sure the angles match with each other. Next you set up a proportion and solve. I’ll draw this all out for you. I hope this helps! :))

7 0
3 years ago
What is the surface area of the figure 8" 8" 12"
fgiga [73]
First, find the surface area of the bigger sides (there are 4 of them so what you get for one you will multiply by 4)

12 x 8 = 96

96 x 4 = 384

Then find the surface area of the smaller sides ( there are two small sides so multiply your answer by two)

8 x 8 = 64

64 x 2 =128

Then add both together 

128 +384 =  512

Hope this helps :)

3 0
3 years ago
A person’s body mass index (BMI) is a measure of the amount of body fat based on height, h, in inches, and weight, w, in pounds.
topjm [15]

Answer:

21.50 to the nearest hundredth.

Step-by-step explanation:

This is  (704.5 * 125) / (64)^2

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3 0
3 years ago
Which expression is a trinominal a) x+y-13 b)4xy c) 4x^3 d) x^3-x^2+7x+5
VikaD [51]

Answer:

a.) x + y - 13

Step-by-step explanation:

Trinomial = an expression with three terms

(tri- means three)

Answer choice a has three terms:

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Therefore, it is the correct answer.

6 0
3 years ago
Carla is following a recipe that calls for a cinnamon-sugar mixture that is 5% cinnamon.
Dahasolnce [82]

Answer:

Step-by-step explanation:

It's a proportion rather than an equation that you might be more accustomed to.

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2 * 0.95 = x * 0.05    Divide by 0.05

2 * 0.95/0.05 = x

x = 38 grams of sugar should be added to the 2 grams of cinnamon.

There's another way to do it.

2/0.05 = (x + 2)/1      Cross multiply

2*1 = 0.05x + 0.1       Subtract 0.1 from both sides

1.9 = 0.05x

1.9/0.05 = x

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Which ever way you understand better is the answer. 100 / 100% is 1

3 0
3 years ago
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