4 years ago

Find the total surface area of a cone whose radius is r/2 and slant height is 2l

1 answer:

3 0

Total surface area of cone: πrl + πr²

Assuming the bottom of the cone is closed.

r = r/2, l = 2l

Total surface Area = π*(r/2)*2l + π(r/2)² = πrl + πr²/4

Total Surface Area = πrl + πr²/4

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3 years ago

<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B2%7D%7B2m%20-%201%7D%20%20-%20%20%5Cfrac%7B1%7D%7Bm%20%2B%202%7D%20%20%3D%201%20%

Scilla [17]

Answer:

m = 1

Step-by-step explanation:

(m+2)(2m-1) 3

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3 years ago

identify the coordinates of four points on the line with each given slope and y-intercept. slope= 1.5, y-intercept= -3

Whitepunk [10]

The slope-intercept form:

$y=mx+b$

m - slope

b - y-intercept

We have the slope = 1.5 and y-intercept b = -3. Substitute:

$y=1.5x-3$

Choose any value of x and calculate y:

for x = -2

$y=1.5(-2)-3=-3-3=-6\to(-2,\ -6)$

for x = -1

$y=1.5(-1)-3=-1.5-3=-4.5\to(-1,\ -4.5)$

for x = 0

$y=1.5(0)-3=0-3=-3\to(0,\ -3)$

for x = 1

$y=1.5(1)-3=1.5-3=-1.5\to(1,\ -1.5)$

for x=2

$y=1.5(2)-3=3-3=0\to(2,\ 0)$

<h3>Answer: (-2, -6); (-1, -4.5); (0, -3); (1, -1.5); (2, 0)</h3>

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4 years ago