The net of a shape can be used to find the surface area of a 3D shape.
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Question 1 of 4
1. Question
5 point(s)Find the surface area of the tetrahedron (also called a pyramid) below. Note the height of the base triangle is 10 cm. On a blank page draw your net of the tetrahedron and calculate the area. Type your answers below.

A tetrahedron has faces
Area of base triangle = cm²
Area of one side of the standing triangle = cm²
Area of all the 3 standing triangles = cm²
Surface area of tetrahedron = cm² ⇐ Answer
Correct 5 / 5 PointsIncorrect / 5 Points 

Question 2 of 4
2. Question
5 point(s)Find the surface area of the prism below. On a blank page draw your net and calculate the area. Type your answers below.

Area of base triangles = in² x 2 = in²
Area of rectangles = in² x 3 = in²
Surface are of prism = in²
Correct 5 / 5 PointsIncorrect / 5 PointsHint
base triangle has a 90° angle.


Question 3 of 4
3. Question
4 point(s)Find the surface area of the cube with sides 3 cm. On a blank page draw your net and calculate the area. Type your answers below.

Area of one square face = cm²
Surface area of cube= cm² x faces = cm²
Correct 4 / 4 PointsIncorrect / 4 PointsHint
All faces have equal sides.


Question 4 of 4
4. Question
1 point(s)Find the surface area of the cuboid below. On a blank page draw your net and calculate the area. Type your answers below.

Surface area of cube = in²
CorrectIncorrect 