Dimensional analysis: 1.35 kilometers per second= ? miles per hour

A3-dimensional figure has a square base and 4 lateral faces that meet at a point. explain the difference between the cross sections when a slice is made perpendicular to the base through the vertex, and when a slice is made perpendicular to the base and not through the vertex

Solve this problem! extra ! 3025/5.5 = a/90.75

Select the correct answer and solve for y