Related InterviewSolutions

• If the height and slant height of a cone are 6 cm and 10 cm respecitvely. Then determine the total surface area and the volume of the cone.
• The length of the base diameter of a wooden toy of conical shape uis 10 cm . The expenditure for polishing whole surfaces of the toy at the raye of rupees 2.10 per square - metre is rupees 429. Calculate the height of the toy. Also determine the quantity of wood which is required to make the toy.
• The lateral surface area of a right circular cone = (Total surface area)=__________________.
• The numerical values of the volume and the lateral surface area of a right circular cone are equal. If the height and the radius of the cone are h unit and r unit respectively , then find the value of `(1)/(h^2)+(1)/(r^2)`.
• The difference of the square of the height and the square of the base of a right circular cone of slant height 10 cm is 28cm, then the volume of the cone will beA. `43pi c c`B. `54 pi c c`C. `72pi c c`D. `96pi c c`
• Among the total surface area , lateral surface area and the area of the base of right circular cone , the total surface area is the greatest in magnitude.
• If the numerical values of the area of the base and the volume of a right circular cone of radius 4cm be equal , then the slant height of the cone isA. 3cmB. 4cmC. 5cmD. 6cm
• The ratio of the volumes of two right circular cones is `1:4` and the ratio of their lengths of radii of the bases is `4:5` then the ratio of their heights isA. `1:5`B. `5:4`C. `25:16`D. `25:64`
• If the height , curved surface area and volume of a right circular cone be h, c and v respectively , then that `3pi vh^3-c^2h^2+9v^2=0`.
• The quantity of iron - sheet to make a boy a of right circular conical shape is `75(3)/(7)` sq-m. if the slant height of it 5 m, then calculate the volume of air in the boya and its height. Determine of the expenditure to colour the whole surface of the boya at the rate of rupees 2.80 per square - metres. [The width of the iron - sheet not to be considered while calculating.]