17.1cm2
27.2cm2
47.1cm2
37.3cm2
Correct answer is C
Find the slant height
l2=h2+r2(h=4cm,r=3cm)
l2=42+32=16+9=25
l2=√25
Squaring both sides
l = 5cm
The area of curved surface (s) =π(3)(5)
15π = 15 × 3.14
= 47.1cm2
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