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SURFACE AREA
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To find the surface area of a solid figure, get the area of each faces and side of the solid and add/ sum up.
What is Surface Area ?
- Surface Area is the measure of the total area or the faces of the object or figure occupies. It is the measurement of the exposed surface of a solid figure (3-D).
What unit of measure is used to measure surface area?
- Surface Area is measured in square units.
Question :
The length of a rectangular prism is 8cm, its widih is 6cm and its height is 4cm. Find its surface area.
Choices :
A. 208 cm2
C. 280 cm2
Answer & Solution :
To find the Surface Area of a RECTANGULAR PRISM, Use this formula : SA = 2×(L×W+L×H+W×H).
By the following Formula :
- SA = 2×(L×W+L×H+W×H)
- = 2 × (8 cm×6 cm+ 8 cm×4 cm+ 6 cm×4 cm)
- =2× 48 cm²+ 32 cm² + 24 cm²
- =
- = 104 cm².
The answer is 104 cm².
