2 years ago

What is the total surface area of a rectangular prise with the dimensions of 2 cm, 5 cm, and 6 cm?

Mathematics

1 answer:

schepotkina [342]2 years ago

7 0

Answer:

60 cm^3

Step-by-step explanation:

Surface Area = lwh

SA = 2 x 5 x 6

SA = 10 x 6

SA = 60

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wel

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3 years ago

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expeople1 [14]

Answer:

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Step-by-step explanation:

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3 years ago

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3 years ago

Law of cosines <br><br> HELP MES

Lorico [155]

Answer:

70.52 degrees

Step-by-step explanation:

To find the angles, we must first find the lengths of each side of the triangle. Adding up the respective radii, we can see that

XY = 5+4 = 9 CM

XZ = 6+5 = 11 CM

ZY = 4+6 = 10 CM

Now we can apply the cosine rule

$C\:=\:\sqrt{A^2+B^2-2ABcosx}$

We need to rearrange the rule to solve for x, our missing angle

$x\:=\:cos^{-1}\left(\frac{a^2+b^2-c^2}{2ab}\right)$

solving for our unknown angle:

$x\:=\:cos^{-1}\left(\frac{9^2+10^2-11^2}{2\cdot 9\cdot 10}\right)$

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Therefore angle YXZ is 70.52 degrees

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3 years ago