Question
The volume of a cube is given as
8×(x+3)3 m3. The length of a rectangle is twice the side length of the cube, and its breadth is 20m. The area of the rectangle is 560 m2. Calculate the surface area of the cube if the side length of the cube is 'x' m.Solution
ATQ, Side of the cube = (8 × (x + 3)3)1/3 = 2 × (x + 3) = 2x + 6 Length of the rectangle = 2 × (2x + 6) m 2 × (2x + 6) × 20 = 560 2x + 6 = 14 2x = 8 x = 4 m Surface Area of the cube = 6 × 4 = 96 m2
What are the drawbacks of subsidies on producing energy using fossil-fuel?
Which of the following is a near synonym of the word ‘excite’?
3
1) Patience implies the quietness or self-possession of one’s own spirit under suffering and provocation.
2) This is because at times anger...
Select the most appropriate option to fill in blank.
Select the most appropriate option for blank No. 4.
Choose the most appropriate word for blank no. (iii)
Find the appropriate word.
Select the most appropriate option to fill in the blank No. 3.
Fill in blank 1 with the appropriate word from the options.
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