Question
The dimensions of a cuboidal box are in the ratio 3:2:1.
If the total volume of the box is 546.75 cm³, determine its lateral surface area.Solution
Let the length, breadth and height of box be '3a', '2a' and 'a' cm respectively.
So, 3a X 2a X a = 546.75
Or, 6a 3 Â = 546.75
Or, a 3 Â = 91.125
Or, 'a' = 4.5
Length of box = 3 X 4.5 = 13.5 cm
Breadth of box = 2 X 4.5 = 9 cm
Height of box = 4.5 cm
Lateral surface area of box = 2 X (length + breadth) X height
= 2 X (13.5 + 9) X 4.5 = 9 X 22.5 = 202.5 cm 2
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)
12.5% of 6400 + (17 × 25) = ?% of 2200+ 125Â
What approximate value will replace the question mark (?) in the following?
? –...
? * 7.05 = (360.06 ÷ 11.02) % of 4290 - 759.91
Solve the following expression and calculate the approximate value.
1727.8 + 2196.75 + 3 × 11.8 × 12.9 × 24.75
49.99% of 639.99 + 159.98% of 49.99 = ?2
19.99% of 79.98 = ?2– 159.99% of 12.5
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
570.11 ÷ 18.98 × 5.14 – 123.9 = √?Â
What approximate value should replace the question mark?
9.96% of 1200.10 − 25% of 4800 = ? − 7000.20
