H=45d h stands for hours and 45d means 45 minutes per day
Find a common denominator 7/8 = 35/40 and 5/10 = 20/40. Also 7/8 is almost a whole and 5/10 is half. 7/8 is greater.
Since 90 degree is 1/4 of a circle, the area will be 1/4 th area of the full circle.
The radius is given by, r = 8 ft, therefore, the area of the full circle is,

Therefore, the area of the sector is,

Answer:
A
Step-by-step explanation:
Answer: b is the answer
Step-by-step explanation: