Answer:
3)x=7,y=-2
Step-by-step explanation:
Answer:
Diameter of the circle is twice it's radius D=2r.
Circumference of the circle is 2πr.
According to the above problem,
<u>2π(radius)</u>=20 inches
2(radius)=20/π=20/3.14
Diameter=<u>6.37 inches</u>
<h3><u>6.37 inches</u> is the right answer.</h3>
Answer:
Step-by-step explanation:
one circle, lets name it x, Circumference(x)=2*3.14*r= 3.14*d, where d is the diameter
C=2*11*3.14
circle y= Circumference(y)=3.14*2*4
ratio of the radii
C(x)/C(y)=(2*11*3.14)/(2*4*3.14)=11/4= 2 3/4
21 divided by 3 = 7
That means the brother is 14 years younger.
36 - 14 = 22
The brother will be 22 years old.
Answer:
should be 15.
Step-by-step explanation:
