Volume of cone = (1/3)pi*r²h
56.52 = (1/3)*3.14*r²*6
56.52/(2*3.14) = r²
9 = r²
r² = 9
r = √9
r = 3
Diameter = 2*r = 2*3 = 6 inches. b.
Answer
No. The amounts of change are the same, but the original amounts are different. The ratio for the percent increase from 50 to 70 is 20/50, or 40%. The ratio for the percent decrease from 70 to 50 is 20/70, or about 29%.
5 people x $5 appetizers = $25
5 people x $10 main dish = $50
Total cost for the group of 5 = $75
$75 - 20% (.2) = $15 each person has to pay
Check ur work
$15 x 5 = $75
