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mariarad [96]
1 year ago
14

To calculate the area of this shape, you would identify the known figures and add their individual areas together.

Mathematics
1 answer:
DochEvi [55]1 year ago
3 0

When calculating the total area of this unknown figure, you should use (π - r²)/4 for the area of both the semicircle (half circle) and the larger square.

<h3>How to determine the total area?</h3>

By critically observing this unknown figure, we can logically deduce that it comprises a semicircle, squares, a rectangle and a triangle. Thus, its total area should be calculated by adding the area of each of the geometric figures together.

Total area = A₁ + A₂ + A₃ + A₄

However, you should take note that the diameter of the semicircle (half circle) is equal to the side length of the larger square.

Area of a semicircle = πr²/4

Thus, the total area of both the semicircle (half circle) and the larger square is given by:

Area = πr²/4 - d²

<u>Note:</u> d = 2r

Area = πr²/4 - (2r)²

Area = πr²/4 - 4r²

Area = (π - r²)/4 sq. units.

Read more on area of square here: brainly.com/question/8902873

#SPJ1

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Samuel can type nearly 40 words per minute. Use this information to find the number of hours it would take him to type 3.2 × 105
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The hours it would take to type 3.2 x 10^5 words is 1.33 x 10^2  hours.

<h3>How many hours would it take to type 3.2 x 10^5 words?</h3>

Standard form is used in expressing large numbers in smaller numbers. It is used to transform large numbers into smaller number.

In order to write a number in standard form, the number is written as a decimal number, between 1 and 10 and multiplied by a power of 10.

For example: 1 x 10² is equivalent to 100

The first step is to determine how many words he can type in 1 hour : 40 x 60 = 2400 words = 2.4 x 10³

The second step is to divide 3.2 x 10^5 words by 2.4 x 10³

3.2 x 10^5 ÷ 2.4 x 10³ = 1.33 x 10^(5 - 3)

1.33 x 10^2  hours

To learn more about standard form, please check: brainly.com/question/25334755

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Step-by-step explanation:

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Step-by-step explanation:

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Which decimals are greater than 0.81? Check all that apply. 1.01 0.9 + 0.07 0.7 + 0.09 (5 × 0.1) + (8 × 0.01) (8 × 0.1) + (5 × 0
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, 0.7+0.9 and 1.01

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0.9+0.7 is 1.6 so its larger because it has a whole number and 1.01 is auto larger

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