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3 years ago

Maria ran 194 miles in 4 hours.What is the unit rate

Mathematics

2 answers:

Nitella [24]3 years ago

8 0

The unit rate would be 48.5 miles per hour.

astraxan [27]3 years ago

4 0

The unit rate would be 48.5 miles per hour because you would just divide 194 and 4 and get the ratio of 48.5:1

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2 years ago

What is the area of a sector with a central angle of 108 degrees and a diameter of 21.2 cm?

Rasek [7]

Answer:

$105.84\ cm^2$

Step-by-step explanation:

step 1

Find the area of the circle

The area of the circle is

$A=\pi r^{2}$

we have

$r=21.2/2=10.6\ cm$ ----> the radius is half the diameter

substitute

$A=\pi (10.6)^{2}$

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step 2

Find the area of a sector

Remember that

The area of the circle subtends a central angle of 360 degrees

using proportion

Find out the area of a sector with a central angle of 108 degrees

$\frac{112.36\pi}{360^o}=\frac{x}{108^o}\\\\x=112.36\pi(108)/360\\\\x=33.708\pi\ cm^2$

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$\pi=3.14$

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3 years ago

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kobusy [5.1K]

Answer:

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Step-by-step explanation:

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2 years ago

A rectangular field is 300 meters long and 250 meters wide. What is the area of the field in square kilometers

lidiya [134]

Answer:

0.075 sq km

Step-by-step explanation:

Given that there is a rectangular field with dimensions of length =300 m and width = 250 m.

We have to calculate area of this rectangle in the units of square kilometres.

Let us convert length and width into km

1000m = 1 km

Hence length = 300/1000= 0.3 km and

width = 250/1000 = 0.25 km.

ARea = length x width = 0.3 x 0.25

=0.075 square km.

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2 years ago