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3 years ago

Please find the perimeter!

Mathematics

1 answer:

puteri [66]3 years ago

7 0

Answer:

1. half circle: C = (2πr) / 2

a. C = (2π4) / 2 ≈ 12.566

2. triangle:

a. find slant / hypotenuse.

i. 4² + 10² = c²

ii. 16 + 100 = c²

iii. c² = 116

iv. c ≈ 10.770

b. add both slants to find triangular area

i. 10.77 + 10.77 ≈ 21.54

3. add:

a. 12.566 + 21.54 ≈ 34.106 cm

hope this helps :)

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What is the simplified expression for:

kari74 [83]

81=3^4
I hope this helps! Good luck!

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3 years ago

The total surface area of a cone whose radius is 2 r and slant height 2l is

vampirchik [111]

Answer:

$A=4\pi r(l+r)$

Step-by-step explanation:

The total surface area of a cone is given by :

$A=\pi rl+\pi r^2\\\\=\pi r(l+r)$

Put r = 2r and l = 2l in the above formula

$A=\pi \times 2r(2l+2r)\\\\A=2\pi r(2l+2r)\\\\=2\pi r \times 2(l+r)\\\\=4\pi r(l+r)$

Hence, the total surface area of the cone is $4\pi r(l+r)$ .

7 0

2 years ago

50 POINTS!

ehidna [41]

Answer:

A. the distance between points W and X

Step-by-step explanation:

<u><em>Looking for the distance of 5 units</em></u>

A. the distance between points W and X

-3 - (-8) = -3 + 8 = 5
Correct

B. the distance between points X and Y

1 - (-3) = 1 + 3 = 4 < 5
Incorrect

C. the distance between points X and Z

5 - (-3) = 5 + 3 = 8 > 5
Incorrect

D. the distance between points Y and Z

5 - 1 = 4 < 5
Incorrect

7 0

3 years ago

I need a written response to solve all 4 steps

borishaifa [10]

Answer:

a. -2

b. s = 2 and y = -5

c. (2.5, -9)

d. -7x - 2

Step-by-step explanation:

a. In the image, I have used rise over run, which is -8/4 or -2.

b. slope formula is mx + b = y, where m is slope and b is the y-intercept. In the equation 2x - 5y = -10, 2 is the slope and -5 is the y-intercept.

c. Plug in all given numbers into an equation and the ones you do not have will be in the points you need it to be. Once you graph the equation you will receive (2.5, -9).

d. y = mx + b

5 = (-7)(-1) + b

5 = 7 + b

-2 = b

y = -7x - 2

6 0

2 years ago

Please help IM a NOT opErAted tO do THIs

stealth61 [152]

I have absolutely no idea goodluck with that

Now the reasoning of me not knowing is because my brain capacity is very low im just tryna get points I hope you find out the answer to that question good day sir

8 0

3 years ago

Read 2 more answers