Question
The lateral area is thrice as big as the base area of a
solid cone. If the diameter of the solid cone is 1 meter, then what is the total surface area of solid cone?Solution
Diameter of the cone is 1 meter ⇒ Radius of the cone (r) = 1/2 meter Area of the base of the cone = π(1/2)2 = π/4 Sq. m. The lateral area is thrice as big as the base area ⇒ Lateral area of the cone is 3π/4 Sq. m. Total surface area of the cone = π/4 + 3π/4 ⇒ π Sq. m. ∴ The total surface area of the solid cone is π Sq. m.
24, 42, 60, ?, 96, 114
What will come in place of (?) question mark in the given number series.
10, 17, 26, 37, 50, ?
660, 653, 639, 618, 590, ?
What will come in place of the question mark (?) in the following series?
75, 219, 388, ?, 809, 1065168, 178, ?, 273, 400, 618, 963
60   61    57   66    ?      75    39
...What will come in place of the question mark (?) in the following series?
2, 5, 14, 41, 122, 365, ?
81, 83, 87, 95, 111, ?
What will come in place of the question mark (?) in the following series?
400, 841, 1202, ?, 1716, 1885
64, 66, 69, 74, 81, ?
Relevant for Exams:
