The first rule you need to know is
So, you have
The second rule you need to know is
So, you have
This is quite easy as it is simply knowing the formulas to solve different portions of the circle.
(A) To solve for circumference, the formula is d*pi where d is the diameter. The diameter is simply twice the radius, so we can just double 11 for it. This means 22 is the answer.
(B) The formula for area of a circle is pi*r^2, so for this one, we just need to square the radius. 11 squared is 121.
(C) To solve this, we should solve for the area of the circle, and then multiply it by 3 to represent the 3 dollars. To solve the area, we just substitute 11 into the formula for r. Afterwards, we should multiply it by 3 for the reason above. However, because we used 3.14 instead of pi, we must say the cost is approximately $1139.82. <span />
Answer:
Pretty sure its 6
Step-by-step explanation:
The hypotenuse is double the length of the shortest side
Answer:
7/8
Step-by-step explanation:
Simplify the following:
(1 + 3/4)/2
Put 1 + 3/4 over the common denominator 4. 1 + 3/4 = 4/4 + 3/4:
(4/4 + 3/4)/2
4/4 + 3/4 = (4 + 3)/4:
((4 + 3)/4)/2
4 + 3 = 7:
(7/4)/2
7/4×1/2 = 7/(4×2):
7/(4×2)
4×2 = 8:
Answer: 7/8
Answer:
4
Step-by-step explanation:
Let x represent the number. The problem statement tells us ...
10x² = 40x
x = 4 . . . . . . . divide by 10x
The number is 4.
