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2 years ago

FInd the volume of the square pyramid shown round to the nearest tenth if necessary 11cm 11cm 15cm

Mathematics

2 answers:

k0ka [10]2 years ago

8 0

Volume = 1/3 * area of base * height

=1/3 * 11^2 * 15

= 605 cm^3 Answer

Inessa [10]2 years ago

7 0

So to find the volume of a square pyramid, the formula is 1/3B2h or Base squared times height divided by 3 because of the triangular pyramid. So the base is 11, the height is 15 so 11 squared is 121 and the height is 15, so 121 times 15.

121 x 15= 1,815.

Now we divide by 3 because of the formula, so 1,815 divided by 3 is...

1,815 / 3= 605 cm squared!

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3 years ago

Solve h = −16t2 + 36t + 4.

kvasek [131]

I can do each of the things I asked above.
So, let's change this into vertex form:
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$h=(-16t^2+36t)+4$
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$h=-16(t^2-2.25t+1.27-1.27)+4$
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<span>Answers may vary due to rounding

</span>Factored Form:
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$h = -4\left(4t^2-9t-1\right)$

Quadratic Formula:
$x = \frac{-b +/- \sqrt{b^2-4(a)(c)}}{2a}$
<span>h = -16t^2 + 36t + 4
</span>a = -16 b = 36 c = 4
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3 years ago

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We square all values given to us

Step 2: we repeat Same for Y^2 table too.

Step 3: XY table we multiply x and y

Step 4: we make a summation of them all

Step 5: we input our summer value into our formula.

Step 6 : we arrive at our answer which is 0.981

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2 years ago