Answer:
y=-13
Step-by-step explanation:
5-y=18
-5 -5
-y=13
*-1 *-1
y=-13
Answer:
4.5
Step-by-step explanation:
=4.5
We know that the area of a circle has the formula A=πr²
We are given the diameter, and as we know that the diameter is twice the radius, we can divide the given diameter by 2.
27 ÷ 2= 13.5
Now, plug-in the number into the formula.
A=πr²
A=π×13.5²
A=π×182.25
(Assume π=3.14)
A=3.14 × 182.25
A=572.265
A=572.3 square meters.
Therefore, the area of the circle is 572.3 square meters.
