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natulia [17]
3 years ago
9

I need help with this please

Mathematics
2 answers:
AnnZ [28]3 years ago
6 0
Hi there! The answer is C.

The area of the square in the middle is the following:
length \: \times \: width \: = 5 \times 5 = 25
Hence, the area of the square is 25 cm^2.

The area of one triangle is the following:
0.5 \times base \: \times \: height \: = 0.5 \times 5 \times 8 = 20
Hence, the total area of the four triangles is 4 × 20 = 80 cm^2.

Therefore, the total area of the pyramid is 80 + 25 = 105 cm^2. The answer is C.
stiks02 [169]3 years ago
3 0
First find the area of the square, the formula is base times height  area of the square=25
then find the area of the triangles, the formula is 1/2bh,the area of the triangle is 20, there r 4 identical triangles so multiply 20 by four the find the surface area of all of the triangles= 80 to find the the total surface area u add the area of the triangles to the area of the square=105
The answer is C.105 centimeters squared<span />
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The diameter can be obtained by the formula A = pi*r^2

First, multiply 0.50 * 100 to obtain the area of the ball, then simplify and solve for the radius. Doubling the radius would yield the diameter. This is shown below:

Area of the ball = 0.50 * 100 = 50 in^2
<span>A = pi*r^2
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r = 3.99 = approx. 4
diameter = 2r
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Among the choices, the correct answer is C. 8.0 in. 

6 0
3 years ago
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Answer:

B, C, and E

Step-by-step explanation:

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Step-by-step explanation:

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3 years ago
When no more than 110 units are produced, the cost of producing y units is given by C(x).
Maslowich

Producing 73.8 units gives the lowest possible average cost.

The average cost (AC) is the ratio of the total cost to the number of units produced. It is given by:

AC = C(x) / x

AC = (0.2x³ – 24x² + 1514x +30064) / x

AC = 0.2x² - 24x + 1514 + 30064/x

The lowest possible average cost is at AC' = 0. Hence differentiating the average cost, gives:

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Solving the cubic polynomial gives:

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Therefore the lowest possible average cost is when 73.8 units are produced.

Find out more at: brainly.com/question/20346871

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