Diameter = 21 inches Circumference Area
2 answers:
Answer:
Circumference: 65.9734 inches
Area: 346.361 square inches
Step-by-step explanation:
If the diameter is 21 inches, we know the radius, r, is 10.5 inches because the radius measure is half of the diameter.
Circumference Formula: 2πr
=2π(10.5)
=65.9734 inches
Area formula: π
π(10.5)^2
= 346.361 square inches
You might be interested in
Answer:
Center (-13,11) , radius 3
Step-by-step explanation:
The given circle has equation
We compare this to the general equation.
where (-a,-b) is the center.
This implies that;
2a=26
2b=-22
b=-11
The center is therefore (-13,11)
The radius is given by
The radius is 3