What is the lateral area of a cone with radius 19 cm and slant height 11 cm?

Mathematics

2 answers:

avanturin [10]3 years ago

8 0

Answer: $656.26\ cm^2$

Step-by-step explanation:

Given: The radius of the cone (r)= 19 cm

The slant height of cone (l)= 11 cm

The lateral surface area of cone is given by :-

$L.S.A.=\pi rl$ , where r is the radius and l is the slant height of the cone.

For r=19 and l=11 , we have

$L.S.A.=\pi (19)(11)\\\\\Rightarrow\L.S.A.=(3.14)(201)=656.26\ cm^2$

Hence, the lateral surface area of cone is $656.26\ cm^2$

konstantin123 [22]3 years ago

3 0

I did the 38 times pi and got 119.3805 then multiplied it by 11 To get 1313.1855 Then divided by 2= 656.59275 And divided by pi 208.9999 Then round up.

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