Surface area - Mathematics knowledge point

Core concepts

Formulas

= (

+

+

)\times2,\qquad

= 6

Tap a symbol to see what it stands for

Substitute numbers

a

=6 $\text{cm}$

b

=4 $\text{cm}$

h

=3 $\text{cm}$

\begin{aligned}2 \times (6 \times 4 + 6 \times 3 + 4 \times 3) &= 108\ \text{cm}^2\end{aligned}

Worked example

Example

Solution

Worked example

Worked examples

Example

Quantities in the formula

=

2(ab

+

ah

+

bh)

Solution steps

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3
4

Answer

!

Worked example

Worked examplesVariant 1

Example

Solution steps

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Answer

Worked example

Worked examplesVariant 2

Example

Solution steps

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4

Answer

Experiment / Case study

A fish tank without a lid

Exercises

Fill in the blank

Common misconceptions

Prerequisites

Features of cuboids and cubes8 min

Practice set

Answered 0 / 6

1Fill in the blank

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2Fill in the blank

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3Single choice

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4Single choice

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5True / False

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6True / False

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