Hello there! :-)
The formula for finding the area of a circle is
Notice that only the radius is squared.
We are given the radius of the circle: 21 cm.
We plug the value of r into the formula:
- A=π(21)²
- A=π(441)
- A=1,385 cm
Hope this helps. Use the comment section to clarify your doubts.
Answered by
~A teen whose hobby is helping people with their homework
#LetItSnow
Good luck.
Answer:
one and a half quaters
Step-by-step explanation:
4/4 is a whole
The they take one 1/4
then that gives you 3/4
which is then 1.5/4 left for you
9514 1404 393
Answer:
£6/h
Step-by-step explanation:
Molly is paid £280 for 35 hours' work, so
£280/(35 h) = £8/h
In the next 5 hours, her pay jumps to £350, so she earns at a rate of ...
(£350 -280)/(5 h) = £70/(5 h) = £14/h
The difference in her pay rates is £14/h -£8/h = £6 per hour.
