Well its
900+0+0
basically
like if it was
9,234
then it would be
9000+200+30+4
By definition, the circumference of a circle is:

The area of a circle is:

Where,
r: radius of the circle.
When the radius is double, then the new area is:

Rewriting we have:

In terms of a we have:
Answer:
The new area of the circle in terms of a is:
Answer:
8
- 1
= 
Step-by-step explanation:
Convert the mixed number to improper fractions, then find the LCD ( least common denominator ) and combine.
You can write your answer in -
Exact Form :

Decimal Form :
7.3
Hope this helps!
Davinia.
2n + 20 = -2
20 + 2 = -2n
22 = -2n
22/2 = n
11 = n
Answer:
= 6% increase in original amount
Step-by-step explanation:
Given that:
Original: 85
new: 90
Difference = 90 - 85 = 5
Now we have to find that;
5 is what percent of 85:
=5/85 * 100
= 5.88%
Rounding off to nearest percent:
= 6% increase in original amount
i hope it will help you!