a rope is measured as 98cm, correct to the nearest cm. find the percentage error of the measurement. give the answers to 3 significant figures

Create and solve a linear equation that represents the model, where squares and triangles are shown evenly balanced on a balance beam. assume the weight of a square is 1 unit and the weight of a triangle is unknown.

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section

The midpoints of the sides of the large square are joined to form a smaller square. what is the area of the smaller square