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3 years ago

Whats the formula for surface area of a trapezoidal prism?

Mathematics

2 answers:

nignag [31]3 years ago

7 0

Step-by-step explanation:

the side length of the lower bottom is a, the side length of the upper is b, the height is h.

Sophie [7]3 years ago

6 0

(b1+b2)h+PH is the formula for surface area of a trapezoidal prism

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A number raised to the third power

Zielflug [23.3K]

I'm guessing you are asking what a number raised to the third power would be called, in that case it'd be called cubed :)

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3 years ago

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A store sells 3 cans of Pringle’s for $5. How much would it cost you to buy 12 cans of pringles

LekaFEV [45]

Answer:

20 because of math

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3 years ago

) The density of oil in a circular oil slick on the surface of the ocean at a distance of r meters from the center of the slick

Feliz [49]

Answer:

Therefore the mass of the of the oil is 409.59 kg.

Step-by-step explanation:

Let us consider a circular disk. The inner radius of the disk be r and the outer diameter of the disk be (r+Δr).

The area of the disk

=The area of the outer circle - The area of the inner circle

= $\pi (r+\triangle r)^2- \pi r^2$

$=\pi [r^2+2r\triangle r+(\triangle r)^2-r^2]$

$=\pi [2r\triangle r+(\triangle r)^2]$

Since (Δr)² is very small, So it is ignorable.

∴ $A=2\pi r\triangle r$

The density $\delta (r)= \frac{40}{1+r^2}$

We know,

Mass= Area× density

$=(2r \pi \triangle r)(\frac{40}{1+r^2}})$

Total mass $M=\sum_{i=1}^n \frac{80r_i\pi }{1+r^2}\triangle r_i$

Therefore

$\sum_{i=1}^n \frac{80r_i\pi }{1+r^2}\triangle r_i=\int_0^5 \frac{80r\pi }{1+r^2}dr$

$=40\pi[ln(1+r^2)]_0^5$

$=40\pi [ln(1+5^2)-ln(1+0^2)]$

$=40\pi ln(26)$

= 409.59 kg (approx)

Therefore the mass of the of the oil is 409.59 kg.

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2 years ago

What is the output of the function f(p) = 3p – 2 when the input is 2? A. 0 B. 2 C. 4 D. 6 E. 8

bazaltina [42]

Step-by-step explanation:

$f(p) = 3p - 2$

$f(2) = 3(2) - 2$

$f(2) = 6 - 2$

$f(2) = 4$

Answer: Option C, 4

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3 years ago

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What is the measurement of each side of the perimeter is 94?

sveticcg [70]

2a+1 + 3a+2 +5a-9 you would start by combining like terms
2a+3a+5a= 10a
1+2-9= -6
10a-6=94
then subtract 94-6=88
then divide 88 by 10= 8.8
a=8.8

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3 years ago