Question
There's a cone of height 12cm out of which a smaller
cone with the same vertex and vertical axis is cut out. What is the ratio of the volume of the larger cone to the remaining part of the cone if the height of the smaller cone is 9 centimeters?Solution
Ratio of height = h1/h2 = 9/12 = ¾ Therefore, Ratio of volumes = (3)3 / (4)3 = 64/27 Hence, the volume of the smaller cone = 27x And the volume of larger cone = 64x Hence the required difference = 64x-27x = 37x Required ratio = 64x/37x                           = 64:37
What is the sum of the supplementary and complementary angles of 60 ° ?
- Two chords, AB and CD, of a circle intersect at an external point E. Given that the lengths of BE and DE are 12 cm and 8 cm, respectively, and the total le...
In ΔABC, PQ is parallel to BC If AP: PB= 3:4 and AQ= 6 cm, AC is equal to?
Let G be the centroid of the equilateral triangle ABC of perimeter 24 cm. Then the length of AG is
AB and AC are the two tangents to a circle whose radius is 6 cm. If ∠BAC = 60o, then what is the value (in cm) of √(AB2 + AC...
In a regular hexagon, the length of one side is 10 cm. Find the area of the hexagon.
O is the circum centre of the isosceles ∆ ABC. Given that AB = AC = 5 cm and BC = 6 cm. The radius of the circle is
In a triangle PQR, ST is drawn parallel to side QR. If PS = 8 cm, QS = 5 cm and PT = 14 cm, then find PR.