find the volume curved surface area and the total surface area of a cone whose height and the slant height for 6 cm and 10 cm respectively
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Answer:
h=6cm
slant height, l=10cm
radius ,r=?
Now, l²=r²+h²
r²=l²-h²
r²=(10cm)²-(6cm)²
r²=100cm²-36cm²
r²=64cm²
r=√(64cm²)
r=8cm.
Volume of cone
=πr²h/3
=3.14×(8cm)²×6cm/3
=401.92cm³
CSA of cone
=πrl
=(22/7)×8cm×10cm
=251.2cm²
TSA of cone
=πr(l+r)
=(22/7)×8cm(10cm+8cm)
=(22/7)×8cm×18cm
=452.16cm²
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