A regular triangular pyramid is cut by 2 planes which are parallel to its base. The planes trisects the altitude of the pyramid. Volume of top, middle and bottom part is V1, V2 and V3 respectively. What is the value of V1 :V2 : V3?
Find the surface area (in cm2) of a sphere of diameter 28 cm.
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What is the measure of an interior angle of a regular polygon of 8 sides?
Find the volume (in cm3) of a right circular cone of diameter 7 cm and height 7 cm.
∆PQR is right angled at Q. If m∠P = 60 deg, then find the value of (secR + 1/2).
Find the volume (in cm3) of a hemisphere of diameter 7 cm.
In ΔPQR measure of angle Q is 90 deg. If tanP = 24/7, and PQ = 14cm, then what is the length (in cm) of side QR?
Find the surface area (in sq.cm) of a sphere of diameter 14 cm.
If the edge of a cube is increased by 3 cm, the volume will increase by 657 cub.cm. What then is the original length of each edge of the cube?
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