Suppose a circle has a circumference 16pi units. what is its radius
2 answers:
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Answer:
B
Step-by-step explanation:
The area of the biggest rectangle =
The area of the of the smallest rectangle inside=
Then the area of the shaded region =
So, we choose B.
The length of the rectangle is = 72 cm
The width of the rectangle is = 56 cm
Area of the rectangle is =
= cm²
As given, the other rectangle has the same area as this one, but its width is 21 cm.
Let the length here be = x
Hence, length is 192 cm.
We can see that as width decreases, the length increases if area is constant and when length decreases then width increases if area is constant.
So, in the new rectangle,constant of variation=k is given by,
or
Hence, the constant of variation is
The answer is 32.5%
and if you need it in decimal form, it would be,