Mathematics
A right circular cone of radius 20 cm has its volume 8800 cm3. Find its:
(a) height
(b) curved surface area.
Give your answer to the nearest whole number.
Related Questions
Using the given graph, answer the following:
(a) Write down the coordinates of the points A, B, C, and E.
(b) Name and write down the coordinates of the image of B under reflection in x-axis.
(c) Name and write the coordinates of the image of D under reflection through the origin.
(d) Which point is the image of A under reflection on the line BH? Write its coordinates.
(e) Name the closed figure ABCDEFGH.
The sum of two numbers is 2 and the sum of their reciprocals is 2.25. Find the numbers.
Construct a regular hexagon of side 4.5 cm. Hence, construct a circle circumscribing the regular hexagon. Use ruler and compass for the construction. Measure and write down the radius of the circle.
164, 160, 156, 152, ….. are in Arithmetic Progression (A.P.). Find :
(a) which term is equal to 0.
(b) the sum of its first 20 terms.