Answer:
B. 62.93 cm²
Step-by-step explanation:
Formula to find area of triangle :
* b * h
* 20.3 * 6.2
62.93 cm²
So volue of a cone=area of circle base times heigt times 1/3
height=4
area of base=pi times r^2
area of abse=aprox 3.14 times 3.2^2=32.1536
32.1536 times 4 times 1/3=32.1536 times 4/3=42.87 the amount of sand is 42.9 ft^3
I do believe it is 0.46852