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3 years ago

HEP HELP IT WOULD MEAN SOMETHING TO ME FIND THE AREA OF THE BLUE SHADED REGION

Mathematics

2 answers:

jeka943 years ago

8 0

The rectangle they created has an area of 20*36=720
but you need to subtract the half circle area so use pi * r ^2
pi(18)^2pi = 324pi
half this area for the circle because only half of the circle is in the rectangle area we found.
so then 720 - (162pi) = blue shaded area

leva [86]3 years ago

3 0

Area of the rectangle:720
area of half circle:254.34
720-254.34=465.66

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Answer:

$\frac{4}{5}$ hour

Step-by-step explanation:

Let x represent time taken by dog to run the 1 and three tenths -mile state fair race.

We have been given that a dog won a race at the local fair by running 3 and one fourth miles in exactly 2 hours.

We will use proportions to solve our given problem as:

$\text{Speed}=\frac{\text{Distance}}{\text{Time}}$

We will equate both speeds as:

$\frac{1\frac{3}{10}}{x}=\frac{3\frac{1}{4}}{2}$

$\frac{\frac{13}{10}}{x}=\frac{\frac{13}{4}}{2}$

$\frac{13}{10\cdot x}=\frac{13}{4\cdot 2}$

Cross multiply:

$13\cdot 10\cdot x=13\cdot 4\cdot 2$

$10\cdot x=4\cdot 2$

$\frac{10\cdot x}{10}=\frac{4\cdot 2}{10}$

Therefore, it will take $\frac{4}{5}$ hour to complete $1\frac{3}{10}$ mile state fair race.

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3 years ago

How to divide 33 photos into two groups so the ratio is 4 to 7

Nataliya [291]

33 photos in a 4x to 7x ratio

4x + 7x = 33
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Note:
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3 years ago

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3 years ago

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