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masha68 [24]
3 years ago
5

What did I do wrong when finding out the sector area? I know the answer I got is wrong so can someone please help me

Mathematics
1 answer:
bonufazy [111]3 years ago
4 0
I believe your mistake is that you are trying to use the sector area formula ti find arc length when there is already a formula for it.
The formula for it is
2r\pi( \frac{degree}{360} )
So first substitute the values in and then simplify!
2(10.5)\pi( \frac{118}{360} )
Now simplify!
21 × 118 is 2478 so it's
\frac{2478}{360} \pi
When divided ou and multiplied, this is 21.62cm!

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James is six years older than lousie. Eight years from now, James will be 4 times older than loise was 4 years ago. What is the
weeeeeb [17]

Answer: 26 years.

Step-by-step explanation:

Let x = current age of Louise  (in years).

Then current  age of James =  x+6

Eight years from now, James's age = x+6+8= x+14

4 years ago, Louise's age = x-4

According to the question

x+14 = 4(x-4)

⇒ x+14 = 4x-16

⇒ 4x-x = 16+14

⇒ 3x = 30

⇒ x= 10 = current age of Louise  (in years).

current  age of James =  10+6 = 16 years

Sum of current ages = 16+10=26 years.

hence, the sum of the current ages is 26 years.

8 0
3 years ago
The Great Pyramid has a height (h) of about 480 ft, a slant height (l) of about 560 ft and a square base of 756 ft. What is the
suter [353]

Answer: 91,445,760 ft³

Step-by-step explanation:

You know that the base of this pyramid is a square, then you can use the following formula to calculate its volume:

V=\frac{s^2h}{3}

Where "s" is the lenght of any side of the base of the pyramid and "h" is the height of the pyramid.

You know that:

h=480ft\\s=756ft

Then, you can substitute these values into the formula. So, you get that the volume of The Great Pyramid is:

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5 0
3 years ago
Abc~def what sequence of transformation will move ABC onto def ​
DENIUS [597]

Answer:

c

Step-by-step explanation:

8 0
3 years ago
I don’t get this one please HELPPP MEE
iren2701 [21]

Answer:

135

Step-by-step explanation:

The given expression is

\frac{2 {x}^{2} }{x} +x(100 - 15x)

From the question, x=5

So,by substitution,we obtain

=\frac{2({5}^{2})}{5} +5(100 - 15(5))

=\frac{2(25)}{5} +5(100 - 75))

=2(5)+5(25)

= 10+125

= 135

Hence the answer is 135

8 0
3 years ago
Ahsan
NikAS [45]

It is number 1 and number 2 because the equation is 242× 62 and Number 1 and 2 are just breaking it down

7 0
3 years ago
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