Answer:
he circumference of a circle is equal to Pi π times the diameter d
.
π⋅(diameter)
Since the diameter d
is equal to 2 times the radius r, the formula for circumference using radius is 2πr
.
2π⋅(radius)
Substitute the value of the radius (r=28cm)
into the formula for the area of a circle. Pi π is approximately equal to 3.14
.
3.14⋅2⋅(28cm)
Multiply 3.14
by 2
.
6.28⋅(28cm)
Multiply 6.28
by 28cm
.
6.28(28cm)
Step-by-step explanation:
