Find the area of the circle:
1. diameter is 7 cm
2. diameter is 11 meters
3. radius is 15 cm
4. radius is 23.5 cm
5. radius is (x+2) units
Thank you po!
1. diameter is 7 cm
2. diameter is 11 meters
3. radius is 15 cm
4. radius is 23.5 cm
5. radius is (x+2) units
Thank you po!
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Answer:
1.A≈38.48cm²
d Diameter
7
cm
Using the formulas
A=πr2
d=2r
Solving forA
A=1
4πd2=1
4·π·72≈38.48451cm²
2.A≈95.03cm²
d Diameter
11
cm
Using the formulas
A=πr2
d=2r
Solving forA
A=1
4πd2=1
4·π·112≈95.03318cm²
3.A≈706.86cm²
r Radius
15
cm
Solution
A=πr2=π·152≈706.85835cm²
4.A≈1734.94cm²
r Radius
23.5
cm
Solution
A=πr2=π·23.52≈1734.94454cm²
5.