4 years ago

The radius of a circle is 7 centimeters. What is the length of a 180° arc?

Mathematics

1 answer:

Sedaia [141]4 years ago

3 0

Answer:

I got the answer of 21.99115. Do I need to round too? If so, look up a rounding calculator and you can put in that decimal number and round to what the question says to round to.

I hope this helps!

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Ashraf takes 1500 steps to walk d metres from his home to the station.

Eddi Din [679]

Answer:

lower bound = 90 - 10 = 80 cm

upper bound = 90 + 10 = 100 cm

lower bound d = 1500 x 80 cm = 120,000 cm

upper bound d = 1500 x 100 cm = 150,000 cm

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3 years ago

Which angles are adjacent to each other?

babymother [125]

Answer:

1st option maybe?

Step-by-step explanation:

4 0

3 years ago

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If the statement if I'm hungry, then I am not happy is assumed to be true is it's inverse of I am not hungry then I must be happ

Natasha_Volkova [10]

Answer:

yes!

Step-by-step explanation:

"i am not happy when hungry" is the inverse of "i am not hungry, i am happy."

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3 years ago

The perimeter of a rectangular garden is 318 meters. The width of the garden is 105 meters more than the length. Find the length

Mandarinka [93]

X = length
2x + 2(x + 105) = 318
2x + 2x + 210 = 318
4x = 108
x = 27
The length is 27 meters long, and the width is 132 meters wide.

5 0

4 years ago

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Find the perimeter of triangle ABC, with coordinates A(-3, 0), B(0, 4), and C(3, 0).

madreJ [45]

The perimeter is the sum of the lengths of all sides.
Find the lengths of the sides using the distance formula:
$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2} \\ \\ \\
A=(-3,0), B=(0,4), C=(3,0) \\ \\
|AB|=\sqrt{(0-(-3))^2+(4-0)^2}=\sqrt{3^2+4^2}=\sqrt{9+16}=\sqrt{25}=5 \\ \\
|AC|=\sqrt{(3-(-3))^2+(0-0)^2}=\sqrt{6^2+0^2}=\sqrt{6^2}=6 \\ \\
|BC|=\sqrt{(3-0)^2+(0-4)^2}=\sqrt{3^2+(-4)^2}=\sqrt{9+16}=\sqrt{25}=5 \\ \\
P=|AB|+|AC|+|BC|=5+6+5=16$

The answer is c. 16.

6 0

4 years ago

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