Question

5. The radius of a cone is 10 cm and the total surface
of a cone is 880 cm? Find the slant height​

Answer 1

Answer:

880 by 10 = 88 answer

I am right guess.

Answer 2

Answer:

r= 10cm

t.s.a=880 cm

to find: l=?

sol: t.s.a of cone = pi×r( l+r)

=22/7×10(l+10)

=3.147×10(l+10)

880=31.5(l+10)

880/31.5=l+10

27.9=l+ 10

28-10=l

l= 18cm approx

hope it helps

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