the area of circle is 154cm². Its diameter will be
Explain it plz
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Answered by
4
Step-by-step explanation:
Let the radius of the circle be r cm.
Then, its area will be cm2.
∴ πr² = 154
⇒ ( 22/7 * r * = 154 )
⇒ r2 = ( 154 * 7/ 22 ) = 49
⇒ r = √49 = 7 cm
∴ Diameter of the circle = 2r = (2 × 7) cm = 14 cm (ans)
Answered by
5
Answer:
diameter = 14cm
Step-by-step explanation:
Let the radius of the circle be r cm.
Then, its area will be cm2.
∴ πr² = 154
⇒ ( 22/7 * r * = 154 )
⇒ r2 = ( 154 * 7/ 22 ) = 49
⇒ r = √49 = 7 cm
∴ Diameter of the circle = 2r
= (2 × 7) cm
= 14 cm
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