Advertisements
Advertisements
प्रश्न
A DNA model was built using the scale 2 cm : 0.0000001 mm. If the model of the DNA chain is 17 cm long, what is the length of the actual chain?
Advertisements
उत्तर
Let the length of the actual chain be x mm.
Therefore, `(2 cm)/(0.0000001 mm) = (17 cm)/(x mm)`
⇒ `x = (17 xx 0.0000001)/2`
= 8.5 × 0.0000001
= 0.00000085 mm
APPEARS IN
संबंधित प्रश्न
Find the ratio of Rs 5 to 50 paise
Find the ratio of 30 days to 36 hours
Fill in the blank for the given equivalent ratio.
3 : 5 = 9 : ____
Complete the table.
| Days | 28 | 21 | ? | 63 |
| Weeks | 4 | 3 | 2 | ? |
Divide the numbers given below in the required ratio.
40 in the ratio 6 : 14
In a family, the amount spent in a month for buying Provisions and Vegetables are in the ratio 3 : 2. If the allotted amount is ₹ 4000, then what will be the amount spent for (i) Provisions and (ii) Vegetables?
If 2 : 3 and 4 : ____ are equivalent ratios, find the missing term
An equivalent ratio of 4 : 7 is
The table lists the world’s 10 largest deserts.
| Largest Deserts in the World | |
| Desert | Area (km2) |
| Sahara (Africa) | 8,800,000 |
| Gobi (Asia) | 1,300,000 |
| Australian Desert (Australia) | 1,250,000 |
| Arabian Desert (Asia) | 850,000 |
| Kalahari Desert (Africa) | 580,000 |
| Chihuahuan Desert (North America) | 370,000 |
| Takla Makan Desert (Asia) | 320,000 |
| Kara Kum (Asia) | 310,000 |
| Namib Desert (Africa) | 310,000 |
| Thar Desert (Asia) | 260,000 |
- What are the mean, median and mode of the areas listed?
- How many times the size of the Gobi Desert is the Namib Desert?
- What percentage of the deserts listed are in Asia?
- What percentage of the total area of the deserts listed is in Asia?
Earth’s total land area is about 148428950 km2. The land area of Asia is about 30 per cent of this total. What is the approximate land area of Asia to the nearest square km?
