<u>Answer-</u>
<em>$2000</em><em> were invested at 5%</em>
<u>Solution-</u>
Let x amount of money was invested at 5% and (6000-x) amount was invested as 3%
We know that,
Putting the values,
And
According to the question,
Therefore, $2000 were invested at 5%
A. The wire needs to be 138.226 cm long but already 34.5565 cm of the circle has been covered.
B. To determine the length of the wire needed, we subtract a quarter of the circles circumference from its whole circumference.
Step-by-step explanation:
Step 1:
The circumference of a circle is obtained by multiplying the radius with 2π.
The circumference of a circle
Here the radius of the circle is 22 cm but already a quarter of the circumference has been covered with wire.
Step 2:
So to determine the length of the wire needed, we subtract a quarter of the circles circumference from its whole circumference.
So the circumference of the circle cm.
cm and
cm.
So the wire needs to be 138.226 cm long but already 34.5565 cm of the circle has been covered. An additional 103.6695 cm of wire is needed to cover the remaining circle.