Chóp S. ABCD có đáy là vuông cạnh =4a. Các mặt bên cùng tạo với đáy góc 45o
. Gọi M, N, P là trung
điểm SA, SB, SC. Lấy Q trên cạnh SD sao cho
SD=3SQ. Tính thể tích
a) Chóp S. MNP.
b) Khối đa diện SMNPQ

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?

Larry wants to buy some carpeting for his living room. the length of the room is 4 times the width and the total area of the room is 16 square meters. what is the length of the living room

The table shows the number of hours orlando spent at football practice last week. select the appropriate numbers below to complete the model to find the number of hours orlando spent practicing on tuesday and friday.