Question 18 pl explain

1.	Question 18 pl explain
Answer» Hey PRETTY Stranger! $\large \bold \red{Here \: you \: go \: !}$ $\textbf{\underline{\underline{Given:}}}$ • Perimeter of Semi-Circle is 108 CM $\textbf{\underline{\underline{To\:Find:}}}$ • DIAMETER of the circle $\textbf{\underline{\underline{Solution:}}}$ Let radius of the semi-circle be r According to the Question : $\star \sf \: \dfrac{1}{<klux>2</klux>}(2\pi \: r) + 2r = 108$ $\implies \sf \: \pi \: r + 2r = 108$ $\implies \sf \: \dfrac{22}{7} \times r + 2r = 108$ $\implies \sf \: 36 \: r = 108 \times 7$ $\implies \sf \: r = \large \boxed{ \red{ \sf \: 21 \: cm}}$ Diameter = 2 × Radius Diameter = 2 × 21 = 42 cm

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