Nia wants the total weight of her luggage to be no more than 50 kilograms. She has
suitcases that weigh 15.8 kilograms. 17.42 kilograms, and 16.28 kilograms. Is the total weig
within the limit? Use only estimation to decide. Explain how you know your estimate gives you
the correct answer.

Zed is making a centerpiece for his dining room table by putting sand in a cube-shaped vase. the vase is 0.25 meters in length, width, and height. he bought 25 kg of sand. assume the density of dry sand is 1,602 kgm3. what is the volume of the sand that zed purchased? the volume of the sand is approximately m3. enter your answer as the number that correctly fills in the blank in the previous sentence. if necessary, round your answer to six decimal places, like so: 42.536475