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Example1

Title: Volume(3D)

Grade Lesson s4-l8

Explanation: The best way to understand PSAT-4 is by looking at some examples. Take turns and read each example for easy understanding.

Examples

Topics → Definition Example1

What’s the volume of a 3D shape with a side length of 5m, height of 6m, the radius is 3m, and width of 7m?( Use value π is 3.14).

Step: 1

The first 3D shape is a sphere. To calculate the volume of a sphere, use the formula:\$113.04(m)^3\$.

Explanation:

Finding the volume of a sphere is a simple task when the formula is used: \$V = 113.04(m)^3, volume = 4/3 π(r)^3\$.

Step: 2

The next 3D shape is a cone. To calculate the volume of a cone, use the formula \$56.52(m)^3\$.

Explanation:

Finding the volume of a cone is a simple task when the formula is used: \$V = 56.52 (m)^3, volume = 1/3 π(r)^2 \times h\$.

Step: 3

The third 3D shape is a rectangular prism. To calculate the volume of a shape, use the formula \$210(m)^3\$.

Explanation:

Finding the volume of a rectangular prism is a simple task when the formula is used: \$V = 210(m)^3, "Volume"(v) = "length" \times "width" \times "height"\$.