If radius of circle is decreased by 50% its area is reduced by

0.25 or 25%

Step-by-step explanation:

because the area of circle is 2πr^2 or two radius times together so that both are decreased by 50%

Difference%= 75/100 × 100 = 75%. So, when the radius of a circle is decreased by 50% the are will decrease by 75%. Hope it helps. could you mark it as brainliest

Step-by-step explanation:

step-by-step explanation:

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225