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Molodets [167]
3 years ago
14

Decrease £19064.67 by 9.5% Give your answer rounded to 2 DP.

Mathematics
1 answer:
alina1380 [7]3 years ago
6 0

Answer:

New amount (decrease) = £17253.53

Step-by-step explanation:

<u>Given the following data;</u>

Amount = £19064.67

Percentage = 9.5%

To find the percentage decrease;

Percentage \; cost = \frac {9.5}{100} * 19064.67

Percentage \; cost = 0.095 * 19064.67

Percentage cost = £1811.14

New amount (decrease) = Original amount - percentage cost

Substituting into the equation, we have;

New amount (decrease) = £19064.67 - £1811.14

<em>New amount (decrease) = £17253.53</em>

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You can answer this using an online calculator - calculator soup dot com under geometry then pyramid. Select given a (side length) and s (slant height). Enter the amounts to find V (volume).

To manually compute, get the h (height) first before computing for V (volume).

h^2 = l^2 - (s/2)^2  :  l (slant height), s (base edge/side)
h = √((45^2) - (54/2)^2)
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V = 1/3 (s^2)(h)
V = 1/3 (54^2)(36)
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3 years ago
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Step-by-step explanation:

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Answer:

Step-by-step explanation:

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3 years ago
How do you find a volume of a cone?
Dennis_Churaev [7]

Answer:

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Step-by-step explanation:

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where r is the radius (of the base), and h is the height perpendicular to the circular base.

_____

<em>Comment on area and volume in general</em>

You will note the presence of the factor πr² in these formulas. This is the area of the circular base of the object. That is, the volume is the product of the area of the base and the height. In general terms, ...

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This is the case for any cylinder or prism, even if the parallel bases are not aligned with each other. (That is, it works for oblique prisms, too.)

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* in this discussion, we have assumed the base is in a horizontal plane, and the height is measured vertically from that plane. Of course, any orientation is possible.

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3 years ago
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