A regular octagon has sides measuring about 4cm. If the octagon is divided into 8 congruent triangles, each has a height of 5 cm. What is the area of the octagon?

Answers

Answer 1

Answer:
Base of each triangle = about 4 cm
Height of each triangle = 5 cm

Area of each triangle = (1/2) (base) (height)
and there are 8 of them.

Total area = (8) x (1/2) x (base) x (height) =

(4) x (about 4 cm) x (5 cm) = about 80 cm² .

Answer 2

Answer: The area of a triangle is 1/2*base*height

So, do that for one of the triangles, since they're all the same 1/2*4*5=10cm squared

Multiply by 8 to find the total

10*8=80

80 cm squared.

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What is made up of two or more three dimensional figures

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House , Computers , mobile , bottle , bags etc. are all made up of two or more three dimensional figures.

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A prism is a three-dimensional object having two congruent parallel bases. Any polygon can be used for the bases, which are also two of the faces. Rectangles make up the rest of the faces.

The shape of a prism's base determines its name.

Everything in surrounding is made of many three dimensional figures

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Answer: triangular and rectangular prism

Can 6cm, 4cm, and 10cm form a triangle

Answers

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A waiter earns $128 for 6 hours of work. The total included $86 in tips. How much does the waiter earn each hour

Answers

128-86=42. 42 divided by 6 = 7

louise skip counts by 4 on a number line to find 5×4. How many jumps should she draw on number line?

Answers

It should be 5 jumps
0--4--8--12--16--20

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When do you carry the high number in vertical multiplication

Answers

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15
x 5
——-

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2
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5

11. What is the height of the cylinder? The figure is not drawn to scale. (1 point)V = 282.7 in
Please help ASAP

Answers

Answer:

The height of the cylinder is 3.6 inch.

Step-by-step explanation:

In the attached figure,

Volume of the cylinder is 282.7 square inches

Radius of the cylinder is 5 inches.

It is required to find the height of the cylinder.

The volume of the cylinder is given by the below formula as :

$V=\pi r^2 h$

h is height of cylinder

$h=(V)/(\pi r^2)\n\nh=(282.7)/(3.14* (5)^2)\n\nh=3.6\ \text{inch}$

So, the height of the cylinder is 3.6 inch.

The approximate height of the cylinder is 3.6 inches

How to determine the height?

The given parameters are:

Radius, r = 5 in

Volume, V = 282.7 cubic in

The volume is calculated using:

V = πr²h

So, we have:

3.14 * 5² * h = 282.7

Evaluate

78.5 * h = 282.7

Divide both sides by 78.5

h = 3.6

Hence, the approximate height of the cylinder is 3.6 inches