<em>r = 15 cm</em>
<em>formula</em>
<em>V = πr²×h/3</em>
<em>replace</em>
<em>4950 = 22/7×r²×21/3</em>
<em>4950 = 22/7×r²×7</em>
<em>4950 = 22×r²</em>
<em>r² = 4950/22</em>
<em>r² = 225</em>
<em>r = √225</em>
<em>r = √15²</em>
<em>r = 15 cm</em>
I think it is the model ET-2. Not quite sure.
Answer:
Stick to concrete nouns
Explanation:
The best technique to improve the web search result is that search with the help of keywords. These keywords help in searching the required results from search engines.
The keywords are actually nouns. Noun is name of object, place or person. So by using nouns we can search out required results.
For example
If we want to search about some persons bibliography, we use his name in our search. His name is an example of noun.
Here you go plz mark brainlist
