200%.
Careful here! An 800% increase is equivalent to multiplying by 9 - NOT 8. So the sides need to be multiplied by sqrt(9) = 3. That is an increase of 200%
10
Each side will increase by the square root of 69 (approx. 8.3).
That would depend on the original side lengths of the square which have not been given.
Time period is directly proportional to the square root of the length So as we increase the length four times then period would increase by ./4 times ie 2 times.
66
30%
By 44%. Here is how you calculate it: 20% increase is equivalent to an increase by a factor of 1.2 (100% + 20%, converted to decimal). Square that, and you get 1.44 (44% more than the original).
10
Each side will increase by the square root of 69 (approx. 8.3).
Kinetic energy is proportional to the square of the speed; use this fact to calculate the increase in speed (60% increase means an increase by a factor of 1.6). Momentum is proportional to the speed.
That would depend on the original side lengths of the square which have not been given.
If the side of a square doubles, its area increases by a factor of 4 - an increase of 300%.If the side of a square doubles, its area increases by a factor of 4 - an increase of 300%.If the side of a square doubles, its area increases by a factor of 4 - an increase of 300%.If the side of a square doubles, its area increases by a factor of 4 - an increase of 300%.
If the speed of a body is increased by 1.5 times, its kinetic energy will increase by 2.25 times. Kinetic energy is directly proportional to the square of the velocity, so an increase in speed will result in a greater increase in kinetic energy.
Centripetal acceleration, and therefore centripetal force, is proportional to the square of the angular velocity. For example, if you increase the angular velocity by a factor of 10, the centripetal force will be increased by a factor of 100.
Time period is directly proportional to the square root of the length So as we increase the length four times then period would increase by ./4 times ie 2 times.
66
56.25% let side of square is 'a' its perimeter is 4a its area is axa perimeter increase by 25% new perimeter is 5a new sideof square becomes=5a/4= 1.25a its new area is 1.25ax1.25a increase in area in percentage is ((1.25ax1.25a)-(axa))/(axa) *100 =56.25%