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3 years ago

how to work out the surface areas of cuboid? height=2cm length=10cm width=7cm Please do it step by step

Mathematics

1 answer:

Radda [10]3 years ago

6 0

Answer:

208 you find the area of each face then add them up

Step-by-step explanation:

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Please help me.

Keith_Richards [23]

Answer:

$180

Step-by-step explanation:

Since the discount is 40 percent and is also $72, We will cross multiply. 72 x 100 = 40 x what?

7200/40 = 180

The mirror was originally $180.

8 0

3 years ago

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maritza is baking cookies to bring to school and share with her friends on her birthday. the recipe requires 3 eggs for every 2

natali 33 [55]

No. She would need 8 cups in total. Hope this helps :)

3-2

6-4

9-6

12-8

6 0

3 years ago

Y = 3 ( x - 2 )^2 + 5 in standard form

Vlad [161]

Answer:

y=3x^2-12x+17

Step-by-step explanation:

That's what i got

8 0

3 years ago

Use cylindrical coordinates. evaluate x dv e , where e is enclosed by the planes z = 0 and z = x + y + 10 and by the cylinders x

gizmo_the_mogwai [7]

In cylindrical coordinates,

$\begin{cases}x(X,Y,Z)=X\cos Y\\y(X,Y,Z)=X\sin Y\\z(X,Y,Z)=Z\end{cases}\implies\mathrm dV=\mathrm dx\,\mathrm dy\,\mathrm dz=X\,\mathrm dX\,\mathrm dY\,\mathrm dZ$

Then the integral is

$\displaystyle\iiint_Ex\,\mathrm dV=\int_{Y=0}^{Y=2\pi}\int_{X=4}^{X=6}\int_{Z=0}^{Z=X\cos Y+X\sin Y+10}X\cos Y\times X\,\mathrm dZ\,\mathrm dX\,\mathrm dY$
$=\displaystyle\int_{Y=0}^{Y=2\pi}\int_{X=4}^{X=6}(10X^2\cos Y+X^3\cos^2Y+X^3\cos Y\sin Y)\,\mathrm dX\,\mathrm dY$
$=\displaystyle\int_{Y=0}^{Y=2\pi}\left(\dfrac{1520}3\cos Y+260\cos^2Y+260\cos Y\sin Y\right)\,\mathrm dY=260\pi$

5 0

4 years ago

Tina says that 6:8 is equivalent to 36:64 . what did tina do wrong!

serious [3.7K]

She simplified it wrong because you're only supposed to simplify it with the same numbers. For example: simplify 2/4. You divide it by 2/2. You do the same and it will be correct.

8 0

3 years ago

Read 2 more answers