Arope weighs 400 grams per meter of length. what is the weight in kilograms of 6.3 m of this rope

a. 32.72 kg

b. 4.21 kg

c. 24.556 kg

d. 2.52 kg

Having a hard time understanding this question (see attachment).

Aright cylinder has a diameter of 8 m and a height of 6m. what is the volume of the cylinder

Afamily eats at a restaurant. the bill is $42. the family leaves a tip and spends $49.77. a. how much was the tip in dollars? b. how much was the tip as a percentage of the bill?