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astra-53 [7]
3 years ago
15

I have worked the answer to a which is 301.6 but I’m not too sure how you work out b any help would be much appreciated!

Mathematics
1 answer:
Greeley [361]3 years ago
5 0

Answer:

188.5 cm^2

Step-by-step explanation:

a) Your volume is correct.

b) The curved surface area of the cone is called the lateral area.

Its formula is:

LA = (pi)rs,

where pi is 3.14159...

r = radius of the base

s = slant height of the cone

Here, r = 6 cm, and s = 10 cm

LA = (3.14159)(6 cm)(10 cm)

LA = 188.5 cm^2

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Gradient = \frac{y_{1}-y_{2}}{x_{1}-x_{2}}

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This means the gradient is 4x.

The y intercept is where the line crosses the y axis. We can see this is at -3.

<h2>Rule: <u>y = 4x -3</u></h2>

Substitute your values to check if it's right.

y = 4x -3

5 = 4(2) - 3

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Alex Ar [27]

Answer:

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