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3 years ago

Is a triangle whose side measure 12 ft, 16 ft and 20 ft a right triangle?

Mathematics

1 answer:

tensa zangetsu [6.8K]3 years ago

7 0

Answer:

This is a Right Triangle

Step-by-step explanation:

12=a 16=b 20=c

Now lets solve

a^2+b^2=c^2

144+b^2=c^2

144+256=c^2

144+256=400

c^2=400

The square root of 400 is 20..

This IS a Right Triangle

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What integers fall between the square root of 12

Dafna1 [17]

The square root of 12 is 3.4.
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I hope this helps!

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3 years ago

What is the shaded portion of the circle

blagie [28]

Answer:

$(5\pi-11.6)\ ft^{2}$

Step-by-step explanation:

we know that

The area of the shaded region is equal to the area of the sector minus the area of the triangle

step 1

Find the area of the circle

the area of the circle is equal to

$A=\pi r^{2}$

we have

$r=5\ ft$

substitute

$A=\pi (5)^{2}$

$A=25\pi\ ft^{2}$

step 2

Find the area of the sector

we know that

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

by proportion find out the area of a sector by a central angle of 72 degrees

$\frac{25\pi}{360}=\frac{x}{72}\\ \\x=72*25\pi /360\\ \\x=5\pi\ ft^{2}$

step 3

Find the area of triangle

The area of the triangle is equal to

$A=\frac{1}{2}(2.9+2.9)(4)= 11.6\ ft^{2}$

step 4

Find the area of the shaded region

Subtract the area of the triangle from the area of the sector

$(5\pi-11.6)\ ft^{2}$

8 0

3 years ago

What is the distance between points A and B?

Korvikt [17]

Answer:

6 units, hope this helped!

Step-by-step explanation:

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2 years ago

A cylinder has volume 63 cm3. What is the volume of a cone with the same radius and height?

aev [14]

it's answer is

volume of a cone = 21

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3 years ago

A word problem for the expression 5+(-2) The sum will be three i just need a word problem

ioda

Answer:

Mikey had 5 cookies. His friend took 2 with him when he left. How many cookies does Mikey have left?

Step-by-step explanation:

Here, 5 would be the starting amount.

-2 would be the amount taken away.

3 would be our final answer.

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3 years ago