Test
Area of various geometric shapes
This test develops area calculations for rectangles, triangles, circles, trapezoids and other geometric figures. Tasks require students to choose an appropriate formula, substitute dimensions correctly and give answers in square units.
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Sample questions
- In the diagram, a square ABCD is depicted. The length of the side is ___. Find the area of the shape ___.
- Calculate the area of the shape ___.
- Find the area of the sector ___ of a circle. The radius of the circle is ___. Use the constant π as 3.14. Round the result to the nearest integer.
- Find the area of the circle. The radius of the circle is ___. Use the constant π as 3.14. Round the result to the nearest integer.
- Find the area of the shape ___, where segment AE is ___, segment EB is ___, and AD is ___.
Areas of geometric figures
Area is measured in square units. For a rectangle A = ab, triangle A = ah/2, parallelogram A = ah, trapezoid A = (a + b)h/2 and circle A = πr².
Composite shapes
Divide a composite shape into simpler parts and add their areas, or subtract a missing part from a larger shape. Convert all lengths to the same unit before applying a formula.
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