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dalvyx [7]
3 years ago
13

Find the shaded region

Mathematics
1 answer:
Rufina [12.5K]3 years ago
6 0

Answer: ~54.54 units squared, or 25*pi - 24

Step-by-step explanation:

To find this, we need to find both the area of the triangle and circle, and then subtract the area of the triangle from the area of the circle.

Area of triangle: A = (bh)/2

Area of circle: A = \pi r^2

To find the radius, we first need to find the hypotenuse of the triangle, which happens to be the diameter of the circle.

Pythagorean Theorem: a^2 + b^2 = c^2, where a and b are sides and c is the hypotenuse.

6^2 + 8^2 = c^2

36 + 64 = 100, c = 10

Knowing that the diameter is 10, we also know that the radius is 5.

Area of the circle with a radius of 5 is 25*pi, or 78.54~

Area of the triangle with side lengths of 6 and 8 is 24.

78.54 - 24 = 54.54 units squared.

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What is the surface area of this composite solid?______________ square feet 242 319 363 517
jeka57 [31]

Answer:

<h2>The right answer is 415.4 cubic feet.</h2>

Step-by-step explanation:

As you can observe in the image attached, the composite figure is formed by a square prism and a pyramid on top.

We need to find the volum of each part separately.

<h3> Square prism.</h3>

V_{prims}=11 \times 11 \times 2=242 \ ft^{3}

<h3>Square pyramid.</h3>

First, we need to find the height of the pyramid. We already know the height of each triangular face of the pyramid, which divides equally the side.

Let's use Pythagorean's Theorem to find the height of the pyramid.

7^{2}=h^{2} +(5.5)^{2}\\  49-30.25=h^{2}\\ h=\sqrt{18.75} \approx 4.3

The height is 4.3 feet, approximately.

Now, we find the volume of the pyramid

V_{pyramid}=\frac{1}{3}(11 \times 11 \times 4.3) \approx 173.4ft^{3}

The sum of both figures represents the total volume of the composite figure

V_{total}=242+173.4=415.4ft^{3}

Therefore, the right answer is 415.4 cubic feet.

3 0
3 years ago
Read 2 more answers
What is closest to -49 <br><br> a: -48.09<br> b: -48 3/5
Alborosie
I believe it is B.-48 3/5
6 0
3 years ago
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Four gallons of paint are used to paint 20 chairs and 5 small tables.if each chair and table used the same amount of paint, how
Vinil7 [7]

Answer:

0.16 gallons of paint are used on each piece of furniture.

The answer lies between the whole numbers 0 and 1.

Step-by-step explanation:

we know that

Four gallons of paint are used to paint 20 chairs and 5 small tables.

if each chair and table used the same amount of paint

then

sum the total pieces of furniture

20+5=25 pieces

Find the unit rate

Divide the total gallons of paint used by the total pieces

\frac{4}{25}=0.16\ \frac{gallons}{piece}

therefore

0.16 gallons of paint are used on each piece of furniture.

The answer lies between the whole numbers 0 and 1.

7 0
3 years ago
Right answer gets brainlist
elena55 [62]

Answer:

546

Step-by-step explanation:

Surface Area = 2(lw + lh + wh)

plug in 21 10.5 and 2.5

4 0
3 years ago
Add 2 to both sides of the equation.
qwelly [4]

Answer:

See below.

Step-by-step explanation:

Adding 2 to both sides will not help solve the equation.

Adding 2 to both sides gives you this:

x^3 = ∛(x-2)

x^3 + 2 =∛(x-2) + 2

What was the original question?

4 0
3 years ago
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