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Rashid [163]
2 years ago
8

HELP

Mathematics
2 answers:
Lesechka [4]2 years ago
6 0

Answer: the answer to dat is 12

Step-by-step explanation: because .20 x 60 = 12

uranmaximum [27]2 years ago
4 0
20% of 60 is 12

60/300 = 20%

The friend is incorrect because that is 20% of 300 not 60
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Eight and three fourths minus five and one sixth equals ?
Alex
Three and seven twelfths 

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If r = 3.2, what is the area of the shaded region? Round your answer to the nearest hundredth. Use your calculator's value of π.
MrRa [10]

Answer: The shaded area is 99.55 units squared.

Step-by-step explanation:

r = 3.2

Now, we can see that the sides of the square are equal to two times the diameter of the circles (or four times the radius of the circles), so the length of the sides of the square is:

L = 2*(2*3.2) = 12.8

The area of the square is A1 = L^2 = 12.8*12.8 = 163.84 units squared.

the shaded semicircle has a diameter of 4 times r (so the radius is 2 times r), and the area is equal to half the area of a circle:

A2 = (1/2)*pi*(2r)^2 = (1/2)*3.14*(6.4)^2 = 64.31 units squared.

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A3 = pi*r^2 = 3.14*(3.2)^2 = 32.15 units squared.

Then the shaded area is:

A = A1 + A2 - 4*A3 = 163.84 + 64.31 - 4* 32.15 = 99.55 units squared.

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3 years ago
How are real numbers different from irrational number?
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