I'm not so sure but i think it's D hope it's right
Since it takes less time in September than in June, this is a DECREASE. The percent decrease. The time is different by 114 seconds, divide this by the original time of 465 seconds and then convert to a percent, by multiplying by 100. You should get 114/465 = 0.245 then x 100 = 24.5% decrease.
Answer:
c
Step-by-step explanation:

D) 144(π) cm2
See the image I have shared