2 1/2 litres would be a reasonable amount of water assuming everyone drinks the same amount.
Answer:
133, B and C
Step-by-step explanation:
A = 1/3 * s^2 * h where s is a side of the base and h is the height.
Answer:
Correct choice is B
Step-by-step explanation:
Let a, b, c and d be the trapezoid's sides lengths.
The perimeter of the trapezoid is the sum of all sides lengths, thus,

If each side length is increased by a factor 7, then new sides have lengths 7a, 7b, 7c and 7d. The perimeter of new trapezoid is

Use the distributive property for this expression:

Since
then
