3D Shapes

Front

What is a 3D shape?

Back

A 3D shape is a solid object that has three dimensions: length, width, and height.

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 × base × height.

Front

What is the area of a triangle with a base of 12 feet and a height of 6 feet?

Back

36 ft².

Front

What is surface area?

Back

The sum of all the areas of all the shapes that cover the surface of the object.

Front

What is the formula for the surface area of a rectangular prism?

Back

Surface Area = 2(lw + lh + wh), where l = length, w = width, h = height.

Front

What is the surface area of a rectangular prism with dimensions: length = 9 m, height = 10 m, width = 12 m?

Back

636 m².

Front

Which of the following is a 3D shape: circle, rectangle, cube, square?

Back

Cube.

Front

What is a pyramid?

Back

A pyramid is a 3D shape with a polygonal base and triangular faces that meet at a point.

Front

What is the volume of a cube with a side length of 4 cm?

Back

Volume = side³ = 4 cm × 4 cm × 4 cm = 64 cm³.

Front

What is the difference between 2D and 3D shapes?

Back

2D shapes have only length and width, while 3D shapes have length, width, and height.