find the diameter whose areas is 254.34 cm taking π=3.14
Answers
Answered by
52
Area of circle= pie r^2
254.34cm^2 = 3.14 × r^2
254.34/3.14= r^2
81cm^2= r^2
_/81cm^2=r
9cm= radius
Hence diameter = 2×9cm= 18cm
254.34cm^2 = 3.14 × r^2
254.34/3.14= r^2
81cm^2= r^2
_/81cm^2=r
9cm= radius
Hence diameter = 2×9cm= 18cm
Answered by
13
Answer:
Diameter of Circle = 18 cm
Step-by-step explanation:
Area of Circle = πr²
254.34 = 3.14 × r²
254.34/3.14 = r²
r² = 81
r² = √81
r = 9 cm
Diameter = r × 2
= ( 9×2 ) cm
= 18 cm
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