If the volume and radius of the cone are 320π cm and 8cm respectively then find the total surface area of the cone
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radius(r)=8cm
volume=320π
1/3πr²h=320π
1/3×8×8×h=320
h=320×3/8×8
h=15cm
now,
h=15cm
r=8cm
l=√(h²)+(r²)
l=√(15)²+(8)²
l=√(225+64
l=√289
l=17cm
now,
TSA of cone=πr(l+r)
=22/7×8(17+8)
=22/7×8(25)
=22/7×200
=4400/7
=628.57(approximately)
hope this answer will help you
if this is the right answer then mark it as brainliest please dear.
volume=320π
1/3πr²h=320π
1/3×8×8×h=320
h=320×3/8×8
h=15cm
now,
h=15cm
r=8cm
l=√(h²)+(r²)
l=√(15)²+(8)²
l=√(225+64
l=√289
l=17cm
now,
TSA of cone=πr(l+r)
=22/7×8(17+8)
=22/7×8(25)
=22/7×200
=4400/7
=628.57(approximately)
hope this answer will help you
if this is the right answer then mark it as brainliest please dear.
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