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Area of the Shaded Part

Solution Step 0/0
What is the area of the shaded part?

Explanations

The fastest way to calculate the area of the shaded part is not to calculate the areas of the separate shaded parts of the squares but rather to:

A. Calculate the total area of the three squares: 100 + 64 + 8 = 180.

B. Calculate the area of the big non-shaded triangle: 1/2 x (10+8+4) x 10 = 110.

C. Deduct (B) from (A): 180 - 110 = 70 (sq units).
Check 60 sq units
Check 70 sq units
Check 80 sq units
Check 90 sq units

Puzzle Area of the Shaded Part

Puzzle Area of the Shaded Part