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Anastasy [175]
2 years ago
8

Find the surface area of a cone with a radius of 4cm and a slant height of 7cm. Assume π has a value of 3.14

Mathematics
2 answers:
svetoff [14.1K]2 years ago
7 0

Answer:

138.23cm^2

Step-by-step explanation:

I took an assessment with the same question

weeeeeb [17]2 years ago
6 0

I used a calculator for this, and got the answer of C. 138.2cm^2

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Which expressions show a way to solve this problem? marsha had 54 beads. she kept 14 of the beads and shared the rest equally am
leonid [27]
54 - 14 = 40
40/5 = 8
Each friend recieved 8 beads
8 0
2 years ago
How many zeros should have 5 to have 72 dividers?
xenn [34]
Hello,

nice as problem.

| If\ a\ number\ x=a_1^{p_1}*a_2^{p_2}*a_3^{p_3}*....*a_n^{p_n}\\ the\ number\ of\ his\ dividers is:\\{p_1+1}*{p_2+1}*{p_3+1}*....*{p_n+1}
Here x has a power of 5 as divider and a power of 2 as divider (in order to make a power of 10.

5=5^1*2^0

50=5^1*(5^1*2^1)=5^2*2^1

500=5^1*(5^2*2^2)=5^3*2^2

50 000 000=5^8*2^7

Numbers of dividers: (8+1)*(7+1)=9*8=72








3 0
3 years ago
A vending machine accepts​ nickels, dimes, and quarters. Exact change is needed to make a purchase. How many ways can a person w
arlik [135]
If he uses 1 quarter, he has 40 cent left to make.He can do that in two ways, by using 2 dimes andall four nickels, or all 3 dimes snd 2 nickels.That's 2 ways.
If he uses both quarters, he has 15 cent left to make.He can do that in two ways by using 1 dime and 1 nickel,or no dimes and 3 nickels.That's 2 more ways.    So there are four ways to make 65 cents.
7 0
3 years ago
Read 2 more answers
The base length of a triangle is 8 feet and the height is 4 feet. What is the area of the triangle?
Marina86 [1]

Answer:

16

Step-by-step explanation:

8 × 4 = 32

32 × 1/2 = 16

Hope this helps <3

6 0
2 years ago
Jerry planted a pine tree that was 5 feet tall and a maple tree that was 10 feet tall. The pine tree grew 3 feet taller per year
stich3 [128]

The initial length of the pine tree=5 feet.

Groth rate of pine tree =3 feet/year.

The initial length of the pine tree =10 feet.

Groth rate of the maple tree =2 feet/year.

After x years, the height of the pine tree= 5+3x feet and

after x years, the height of the maple tree= 10+2x feet.

The inequality for which, after x year, the pine tree is taller than the maple tree is

5+3x>10+2x

\Rightarrow x>5 .

The inequality for which, the pine tree is at least as tall as the maple tree is 5+3x\geq10+2x.

\Rightarrow x\geq 5 .

Again, after 3x years, the height of the pine tree= 5+3(3x)=5+9x feet and

after 2x years, the height of the maple tree= 10+2(2x)=10+4x feet.

The inequality for which, after 3x years, the pine tree is taller than the maple tree was after 2x years is

5+9x>10+4x

\Rightarrow 5x>5

\Rightarrow x>1.

The inequality for which, the pine tree is at least as tall as the maple tree is 5+9x\geq10+4x.

\Rightarrow 5x\geq5

\Rightarrow x\geq 1.

5 0
3 years ago
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