Answer:
A = 8π cm²
Step-by-step explanation:
The area (A) of a circle is calculated as
A = πr² ( r is the radius )
Here diameter = 8 , then r = 8 ÷ 2 = 4
The area of half a circle is then
A =
π × 4² =
× π × 16 = 8π cm²
Answer:
No, you would multiply 12
Step-by-step explanation:
Answer:
x = 20
Step-by-step explanation:
Since one part of the straight angle = 90°, then
4x - 10 + x = 90, that is
5x - 10 = 90 ( add 10 to both sides )
5x = 100 ( divide both sides by 5 )
x = 20
The values of a and b are 1/4 and 1/5 respectively
<h3>How to determine the true statement?</h3>
The function is given as:
16x^2 - 25y^2 = 1
The above function is a horizontal hyperbola.
A horizontal hyperbola that passes through the origin is represented as:
![\frac{x^2}{a^2} - \frac{y^2}{b^2} = 1](https://tex.z-dn.net/?f=%5Cfrac%7Bx%5E2%7D%7Ba%5E2%7D%20-%20%5Cfrac%7By%5E2%7D%7Bb%5E2%7D%20%3D%201)
Rewrite 16x^2 - 25y^2 = 1 as
![\frac{x^2}{1/16} - \frac{y^2}{1/25} = 1](https://tex.z-dn.net/?f=%5Cfrac%7Bx%5E2%7D%7B1%2F16%7D%20-%20%5Cfrac%7By%5E2%7D%7B1%2F25%7D%20%3D%201)
By comparison, we have:
![a^2 = \frac{1}{16}](https://tex.z-dn.net/?f=a%5E2%20%3D%20%5Cfrac%7B1%7D%7B16%7D)
![b^2 = \frac{1}{25}](https://tex.z-dn.net/?f=b%5E2%20%3D%20%5Cfrac%7B1%7D%7B25%7D)
Solve for a and b
![a = \frac{1}{4}](https://tex.z-dn.net/?f=a%20%3D%20%5Cfrac%7B1%7D%7B4%7D)
![b = \frac{1}{5}](https://tex.z-dn.net/?f=b%20%3D%20%5Cfrac%7B1%7D%7B5%7D)
Hence, the values of a and b are 1/4 and 1/5 respectively
Read more about hyperbola at:
brainly.com/question/27799190
#SPJ1
Answer:
5 remainder 50 and 2 remainder 100
Step-by-step explanation:
432 /73
432=400
73=70
70/400 = 005 Remainder 50
1275=1300
588=600
1300/600=2 remainder 100