In this Grade 8 lesson from Pengi Math Chapter 2, students apply square roots and cube roots to solve geometric problems, such as finding missing side lengths of squares and edge lengths of cubes given their volume. Students also learn to identify perfect squares and approximate square roots of non-perfect squares using nearby perfect squares. These skills are then used to estimate and interpret results in real-world situations.
Section 1
Area of a Square
Area,
Length of a side,
We can use the formula to find the length of a side of a square for a given area.
Section 2
Volume and surface area of a cube
A cube is a rectangular solid whose length, width, and height are equal. For any cube with sides of length :
Volume:
Surface Area:
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter
Expand to review the lesson summary and core properties.
Section 1
Area of a Square
Area,
Length of a side,
We can use the formula to find the length of a side of a square for a given area.
Section 2
Volume and surface area of a cube
A cube is a rectangular solid whose length, width, and height are equal. For any cube with sides of length :
Volume:
Surface Area:
Book overview
Jump across lessons in the current chapter without opening the full course modal.
Continue this chapter