Length: 0:32The Building PlanThe plan shows 3, 1, 2 and 2. How many cubes does the building have?Grade 4Learning video 93 · Geometry
Perimeter of an L-Shape
Watch and solve along: the video pauses when the question comes. Type your answer, then watch the solution.
Read the story
This shape looks like an L. We are looking for its perimeter.
We slide the short sides outwards. That makes a rectangle of 6 and 4 centimeters.
The perimeter stays the same: 6 plus 4 plus 6 plus 4 is 20 centimeters.
An L-shape fits into a rectangle of 8 cm and 5 cm. What is its perimeter?
Answer and working
Correct! 8 plus 5 plus 8 plus 5 is 26 centimeters.
8 + 5 + 8 + 5 = 26
Geometry
Length: 0:32The Building PlanThe plan shows 3, 1, 2 and 2. How many cubes does the building have?Grade 4
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