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2 years ago

What is the elapsed time between 2:45 and 6:55?

Mathematics

2 answers:

Bad White [126]2 years ago

8 0

D, Four hours and ten minutes

6 - 2 = 4

55 - 45 = 10

Marina CMI [18]2 years ago

6 0

4 hours and 10 minutes

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An arc measures 50°in a circle with a radius of 8 cm. What is the area of the sector to the nearest tenth of a square centimeter

marysya [2.9K]

Answer:

$27.9cm^2$

Step-by-step explanation:

The <u>total area</u> of the circle is given by:

$a=\pi r^2$

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and $r$ is the radius: $r=8cm$

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$a=(3.1416)(8cm)^2\\a=(3.1416)(64cm^2)\\a=201.06cm^2$

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Thus, we want 50° out of the 360° degrees in the circle. For this, we divide the total area by 360 and then we multiply by 50:

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the area of the sector to the nearest tenth is $27.9cm^2$

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3 years ago

An examination class of 55% of pupil scored 70% , if 54% scored above 70%. how many scored above 70%.

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