Response: a) 
b) The area has grown by 0.75 square meters.
Detailed breakdown:
Let the room's length be l
Let the room's breadth be 'b'
The area of a rectangle is calculated using the formula:

Per the problem, the room's new area equals 175% of its old area.
Thus, a) The new area of the room is determined as

This indicates a 175% increase in the room's length, resulting in a 175% increase in area.
b) The increase in square meters for Megan's room area is

Because SI units are structured around powers of 10, you can shift the decimal point to convert; imperial units lack that base-10 organization, so the decimal-shifting method doesn't apply.
Response:1 and 2
Step-by-step Explanation:
Provided data
Volume required 
For the initial cylinder





For the second cylinder





For the third cylinder





For the fourth cylinder





Thus, cylinders
and
meet the requirement as they remain under 