Calculate Rectangle Area: 4-Squared Width × 5cm Length Problem

The width of a rectangle is equal to 42 4^2 cm and its length is 5 5 cm.

Calculate the area of the rectangle.

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Calculate the rectangle's area
00:03 Apply the formula for calculating the area of a rectangle (side x side)
00:07 Insert the relevant values according to the given data and proceed to solve for the area
00:10 Calculate 4 squared
00:19 Break down 16 into 10 plus 6
00:22 Open the parentheses properly - multiply each factor
00:33 Calculate each multiplication separately and proceed to add them together
00:37 This is the solution

Step-by-step written solution

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1

Understand the problem

The width of a rectangle is equal to 42 4^2 cm and its length is 5 5 cm.

Calculate the area of the rectangle.

2

Step-by-step solution

We use the formula to calculate a rectangle: length times width:

According to the existing data:

42×5=S 4^2\times5^=S

S=16×5 S=16\times5

S=80 S=80

3

Final Answer

80

Practice Quiz

Test your knowledge with interactive questions

Look at the rectangle ABCD below.

Side AB is 6 cm long and side BC is 4 cm long.

What is the area of the rectangle?
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