ABC26GN4616 · Area

Subject: General Aptitude · Chapter: Area · Exam: · Marks: · Difficulty:

A sector of $56^{\circ}$ has an area of $17.6 \mathrm{cm}^{2}$. The its radius will be
(a)1.5 cm
(b)3 cm
(c)4.2 cm
(d)6 cm
Answer
Answer (as printed): D
Explanation
$\frac{\pi R^{2} \times 56}{360}=17.6 \Rightarrow R^{2}=\left(\frac{17.6 \times 360 \times 7}{22 \times 56}\right)=36 \Rightarrow R=6 \mathrm{cm}$.

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