03- para ladrilhar totalmente uma parede de 27m por 2de área foram usadas peças quadradas de 15 cm de lado. Quantas pecas foram usadas ?
04- uma metalúrgica utiliza chapas de aço quadradas de 1m de lado para recortar 30 cm de lado . Ao sair da máquina, da chapa original sobre uma parte que é reaproveitada posteriormente. Quantos cm2 de chapa são reaproveitados?

Use the radius you found in part i (r=26.8 cm) with the surface area formula below to find the surface area of the sphere. show your work and round your answer to the nearest tenth. the surface area of a sphere: sa = 4πr^2 self note: 3.8.4

Select the correct answer from each drop-down menu. a system of equations and its solution are given below. system a complete the sentences to explain what steps were followed to obtain the system of equations below. system b to get system b, the equation in system a was replaced by the sum of that equation and times the equation. the solution to system b the same as the solution to system a.]

Adeli owner keeps track of the to-go orders each day. the results from last saturday are shown in the given two-way frequency table. saturday's to-go deli orders in person by phone online total pick up 38 25 31 94 delivery 35 28 34 97 total 73 53 65 191 what percent of the to-go orders were delivery orders placed by phone? a. 14.66% b. 38.41% c. 28.87% d. 52.83%