The curved surface area of a right circular cone of height 15 cm and b

1.	The curved surface area of a right circular cone of height 15 cm and base diameter 16cm is ....(A) 130 cm^ (B) 146cm^ (C) 136 cm^(D) 90cm^
Answer» Answer: H = 15 cm, r = 8 cm So, l=r2+h2−−−−−−√=82+(15)2−−−−−−−−√=17cml=r2+h2=82+(15)2=17cm ∴ CURVED surface area : =πrl=(π×8×17) CM2=136π cm2

The curved surface area of a right circular cone of height 15 cm and base diameter 16cm is ....(A) 130 cm^ (B) 146cm^ (C) 136 cm^(D) 90cm^

Answer»

Answer:

H = 15 cm, r = 8 cm

So,

l=r2+h2−−−−−−√=82+(15)2−−−−−−−−√=17cml=r2+h2=82+(15)2=17cm

∴ CURVED surface area :

=πrl=(π×8×17) CM2=136π cm2

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The curved surface area of a right circular cone of height 15 cm and base diameter 16cm is ....(A) 130 cm^ (B) 146cm^ (C) 136 cm^(D) 90cm^​

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The curved surface area of a right circular cone of height 15 cm and base diameter 16cm is ....(A) 130 cm^ (B) 146cm^ (C) 136 cm^(D) 90cm^