Question
A right triangular pyramid XYZB is cut from cube as
shown in figure. The side of cube is 16 cm. X. Y and Z are mid points of the edges of the cube. What is the total surface area (in cm2) of the pyramid?Solution
XB = BY = 8 given that Xy2 = 82 + 82 = xy = 8√2 Xz = yz = 8√2 cm Bare area of pyramid (equilateral D0 Whore side is 8√2 = √3 / 4 × (side)2 = √3 / 4 × 8√2 = √3 / 4 × 64 × 2 = 32√3 cm2 ∠ P = 900 BP = 4√2 Height = 4√2 Bp2 +py2 = By2 (PGT Satisfy height for 3 part in 4√2 Area = 3 × ½ × 8√2 × 4√2 = 96 ISA = 96 + 32√3 cm2
In the following sentence, there is a blank space. Below each such sentence, there are four options with one word each. Fill up the blank with the word...
After his promotion, John was _______ with excitement.
The dark clouds indicate a dust storm ________ outside.
They filed case against the criminal but no one was ready to show up as a ___________.
- Given below is a sentence with one blank. Below the sentence are given four words among which one word might fill the blank. If none of the words fill the ...
Her eloquent speech at the conference left a profound _________ on the audience, inspiring them to take action.
Given below sentence with two blanks. Below sentence are given four pair of words among which one pair might fill the blank. If none of the words fill ...
Fill in the blank/s with suitable Word/s:
The team needs to _________ a new strategy and _________ it immediately.
Select the most appropriate option to fill in the blank.
Sachin is_____in having a good time than to study.
Temperature control systems have to be stringent to __________ maximum yield.
