Answer:
The best answer is b
Step-by-step explanation:
First, find the LCD (least common denominator) of the two fractions.
List the multiples of each denominator and find the one that is common.
Multiples of 8: 8, 16, 24, 32, 40
Multiples of 5: 5, 10, 15, 20, 25, 30, 35, 40
40 is your LCD.
Second, what can you divide by to make the denominators of each fraction '40'? Whatever you do to the bottom you must do to the top.
Third, multiply.
Fourth, since the denominators are the same now, we can combine them.
Fifth, subtract '25 - 16' to get 9.
Since
is already in the simplest form, it is your answer.
Answer as fraction:
Answer as decimal:
The perimeter of the entire figure is 62.8 cm.
Given, that the diameter of the inner semicircles is 9 cm and the width between the outer and inner semicircles is 2 cm.
The radius of the inner semicircle =4.5 cm and the radius of outer semicircle =5.5 cm (∵Diameter=9+2=11 cm)
We need to find the perimeter of the entire figure.
<h3>What is the perimeter?</h3>
A perimeter is a closed path that encompasses, surrounds, or outlines either a two-dimensional shape or a one-dimensional length. The perimeter of a circle or an ellipse is called its circumference.
We know that, the circumference of a semicircle=πr and the circumference of two semicircles=2πr
Thus, the circumference of inner semicircles=2×3.14×4.5=28.26 cm
The circumference of outer semicircles=2×3.14×5.5=34.54 cm
The perimeter of the entire figure=28.26+34.54=62.8 cm
Therefore, the perimeter of the entire figure is 62.8 cm.
To learn more about the perimeter visit:
brainly.com/question/6465134.
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Answer:
2
Step-by-step explanation:
Evaluate p + 4 - 1 - (r + 4) where p = 4 and r = 1:
p + 4 - 1 - (r + 4) = 4 + 4 - 1 - (4 + 1)
4 + 1 = 5:
4 + 4 - 1 - 5
4 + 4 - 1 - 5 = (4 + 4) - (1 + 5):
(4 + 4) - (1 + 5)
4 + 4 = 8:
8 - (1 + 5)
1 + 5 = 6:
8 - 6
8 - 6 = 2:
Answer: 2
Answer:
57.6
Step-by-step explanation:
