The diameter of the base of a cone is 10.5 cm and its length height its slant height is 10 centimeter the curved surface area is
2 answers
The diameter of the base of a cone is 10.5 cm and its length height its slant height is 10 centimeter the curved surface area is
the curved surface is a portion of a Circle
the slant height is the radius of the Circle
the circumference of the base of the cone
... is a portion of the circumference of the Circle
area (A) of the Circle ... π * 10^2 = 100 π cm^2
circumference of the Circle ... π * 20 cm
circumference of the base of the cone ... π * 10.5 cm
curved surface area of the cone ... [(10.5 π) / (20 π)] * 100 π cm^2
the slant height is the radius of the Circle
the circumference of the base of the cone
... is a portion of the circumference of the Circle
area (A) of the Circle ... π * 10^2 = 100 π cm^2
circumference of the Circle ... π * 20 cm
circumference of the base of the cone ... π * 10.5 cm
curved surface area of the cone ... [(10.5 π) / (20 π)] * 100 π cm^2