Find the area and perimeter of a circle of radius 21 cm.
Answers
Answered by
3
Answer:
A≈1385.44
A≈1385.44r Radius
A≈1385.44r Radius 21
A≈1385.44r Radius 21Solution
A≈1385.44r Radius
21SolutionA=πr2=π·212≈1385.44236
Answered by
43
Solution :-
★ Area of circle = πr²
→ Area = 22/7 × 21 × 21
→ Area = 22 × 21 × 3
→ Area = 1396 cm²
★ Circumference of circle = 2πr
→ Circumference = 2 × 22/7 × 21
→ Circumference = 2 × 22 × 3
→ Circumference = 132 cm
Similar questions