Question

diamter of the base of a cone is 10.5cm and it's slant height is 10cm.Find its curved surface area.​

Answer 1

Hello❤!!

Radius if the base=10.5÷2=5.25 cm

Slant height of an object =10 cm

Curved surface area of cone=πrl

=(22/7×5.25×10) cm^2

=165 cm^2

•Therefore, the curved surface area of the cone is 165 cm^2

Answer 2

Answer:

we have

radius=10.5/2

=105/10/2

=105/10×1/2

=21/2×1/2

=21/4

slant height=10cm

now

we find its curved surface area

now

curved surface area of cone=πRl

=22/7×21/4×10

=22/7×21/4×10

=11×3/2×10

=11×3×5

=33×5

=165

hence

165cm²