Question
Download Solution PDFThe perimeter of a semi-circle is 56.54 cm. What is its diameter (in cm)? (Use π = 3.14)
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
The perimeter of a semi-circle is 56.54 cm.
Formula used:
Perimeter of semi-circle = πr + 2r
Where, r = radius
Calculations:
56.54 = 3.14r + 2r
⇒ 56.54 = 5.14r
⇒ r = 56.54 / 5.14
⇒ r = 11 cm
⇒ Diameter = 2r = 2 × 11
⇒ Diameter = 22 cm
∴ The correct answer is option (3).
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