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Example1

Title: Area of 3D shapes

Grade Lesson s4-l6

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 area of a 3D shape with a side length of 6m, height of 6m, the radius is 4m, and width of 5m? (Use value π is 3.14)

Step: 1

The first 3D shape is a cube. To calculate the area of a cube, use the formula: \$216m^2\$.

Explanation:

Finding the area of a cube is a simple task when the formula is used: \$A = 216m^2 (Area = 6 \times (s)^2 )\$.

Step: 2

The next 3D shape is a cuboid. To calculate the area of a cuboid, use the formula \$192(m)^2\$.

Explanation:

Finding the area of a cuboid is a simple task when the formula is used: \$A = 192m^2 (Area = 2(lw + lh + wh)\$.

Step: 3

The third 3D shape is a rhombus. To calculate the area of a cylinderical shape, use the formula \$251.2(m)^2\$.

Explanation:

Finding the area of a cylindrical is a simple task when the formula is used \$A = 251.2(m)^2\$ \$(A = 2πr(h + r))\$.