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A building engineer analyzes a concrete column with a circular cross section. The circumference of the column is 18pi meters.
What is the area A of the cross section of the column?
Give your answer in terms of pi

196π m²

Step-by-step explanation:

The area (A) of the cross section is calculated as

A = πr² ← r is the radius

The circumference (C is calculated as

C = 2πr = 18π ( divide both sides by 2π )

r = = 9, thus

A = π × 9² = 81π

the best buy, is the 4- kilogram bag of lollipops for $18.40.

step-by-step explanation:

i found my answer by dividing the cost of each bag by their respective weights.

14.88 divided by 2 = 7.44

17.29 divided by 3 = 5.77

18.4 divided by 4 = 4.6

24.4 divided by 5 = 4.88

by this, i found that the 4 kilo bag is the best buy.