Advertisements
Advertisements
प्रश्न
Water level in a well was 20 m below ground level. During rainy season, rain water collected in different water tanks was drained into the well and the water level rises 5 m above the previous level. The wall of the well is 1 m 20 cm high and a pulley is fixed at a height of 80 cm. Raghu wants to draw water from the well. The minimum length of the rope that he can use is ______.
पर्याय
17 m
18 m
96 m
97 m
उत्तर
Water level in a well was 20 m below ground level. During rainy season, rain water collected in different water tanks was drained into the well and the water level rises 5 m above the previous level. The wall of the well is 1 m 20 cm high and a pulley is fixed at a height of 80 cm. Raghu wants to draw water from the well. The minimum length of the rope that he can use is 17 m.
Explanation:
Height of the wall of the well = 1 m 20 cm = 1.20 m
Height of the pulley = 80 cm = 0.80 m
∴ Required minimum length of the rope
= (20 – 5 + 1.20 + 0.80) m
= (15 + 2) m
= 17 m
APPEARS IN
संबंधित प्रश्न
Complete the table given below.
| + | 8 | 4 | –3 | –5 |
| –2 | –2 + 8 = +16 | |||
| 6 | ||||
| 0 | ||||
| –4 |
Find the additive inverse of: 2054
Simplify: (−7) + (−9) + 12 + (−16)
For the following statement write (T) for true and (F) for false:
The sum of three different integers can never be zero.
Is the following statement true or false?
(−7) − 3 = (−3) − (−7)
Find the product: (−8) × (−3) × (−9)
Which of the following statements are true and which are false?
The product of a positive integer and a negative integer is negative.
Simplify: (−9) × 6 + (−9) × 4
Evaluate: (−5) + (−6)
Remembering that 1AD came immediately after 1BC, while solving these problems take 1BC as –1 and 1AD as +1.
The Greeco-Roman era, when Greece and Rome ruled Egypt started in the year 330 BC and ended in the year 395 AD. How long did this era last?
