Answer:
From the circumference you can determine the radius. Once you have the radius, you calculate the area as πr^2
The answer will be
A=201cm^2
Step-by-step explanation:
Since the pentagon is regular, the sides are all of equal length. This tells you
... 5x-27 = 2x-6
... 3x = 21 . . . . . . . add 27-2x
... x = 7
The length of a side can be found by subtituting this value into either expression.
... 2·7-6 = 8 . . . . inches
1: x + 8.23 = -5.14
Subtract 8.23 from both sides
x = -13.37
2: 4/9x = 32
Multiply both sides by 9 (basically, 4 is being divided by 9, so the opposite is to multiply).
(9 times 4, then divided by 9 is 4)
4x = 288
Divide both sides by 4 to isolate x
x = 72
Answer:
B
Step-by-step explanation:
9+9+6+6=18+12=30
hope it helps :)
Answer:10
Step-by-step explanation:
2+3+2+3
is
10