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lianna [129]
3 years ago
5

Square 20cmx20xm

Mathematics
1 answer:
Oxana [17]3 years ago
3 0

Answer:

8,000

Step-by-step explanation:

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Find the area of a circle with diameter 12 cm.
luda_lava [24]

Answer:

113.04 cm.

Step-by-step explanation:

Step 1: <u>Formula/explain</u>

To find the area of a circle, multiply the radius by itself twice, then multiply the product pi.

a=\pi r^2(3.14*radius*radius)

Step 2: <u>Solve</u>

According to the word problem, the circle has a diameter of 12. This means it has a radius of 6.

Now, we plug the numbers into formula.

\pi 6^2 (3.14*6*6)=113.04

Step 3: <u>Conclude</u>

Therefore, the area of this circle is 113.04 cm.

3 0
2 years ago
Kim is trying to save at least $450. She has already saved $75. She can babysit for $5 an hour. How many hours does Kim need to
larisa [96]

Answer:

70 hours.

Step-by-step explanation:

you need to subtract 450 from 75 which tells you you need 350 more dollars then you need to do 5x70 which gives you 350.

7 0
2 years ago
Cos30° cos45°-sin30° sin 45°​
sammy [17]

Answer:

(√6 - √2)/4

Step-by-step explanation:

cos30°cos45° - sin30°sin45°

= cos (30 + 45)°

= cos 75°

= (√6 - √2)/4

4 0
2 years ago
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2 years ago
Five time the difference of a number and seven is twenty-five.”
Tom [10]
5(x-7) = 25
x-7 = 25/5=5
x = 5+7=12
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3 years ago
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