Answer:
Method 1 (using the area of a whole circle and dividing by 4)
First work out the area of the whole circle by substituting the radius of 8cm into the formula for the area of the circle:
A = π ×r²
= π ×8²
= 64π (leave the answer as an exact solution as this need to be divided by 4).
So all you need to do now is divide the answer by 4:
Area of a quadrant = 64π ÷4 = 16π = 50.3 cm² to 3 significant figures.
Method 2 (using ¼ πr²)
Substitute r = 8 directly into the formula A = ¼ πr².
A = ¼ πr².
A = ¼ × π × 8².
A = 50.3 cm²
As you can see it gives exactly the same answer as method 1.
The formula for volume of a sphere is:
V = 4/3 * PI * r^3
Replace r with with given radius:
V = 4/3 * pi * 17^3
V = 4/3 * PI * 4913
You don't give the choices, but anything like the two equations I gave could be correct. Might even multiply the 4/3 by r^3?
If you list the choices I can tell you which one.
Answer:
Option A
Step-by-step explanation:
Here the fat by volume of three different grade is equal to % grade.
Thus, if we write the above relationship mathematically we get -
% of % of + 3[/tex]% of % of
On solving the above equation, we get -
Hence, option A is correct
Answer:
(0,5)
Step-by-step explanation:
If you plug in 0 in all the variables of x, f(x)=0+0+5
We know that f(x) is y...so y=5, while x=0
Sin(210) = -0.87 cos(210) = -0.5