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Radius = 7 in. Area = πr² = 3.14 × 49 = 153.86 ≈ 154 in². Option B is correct. CAST Graphic Arithmetic requires quick use of area formulas for basic shapes.

Area = ½ × base × height = 0.5 × 50 × 28 = 700 ft². Option B is correct. CAST Graphic Arithmetic often features triangles for quick area estimation.

A wheelbarrow places the load between the wheel (fulcrum) and the handles (effort), which defines a second-class lever. This arrangement multiplies force, making it easier to lift heavy loads, though the effort must move a greater distance. CAST Mechanical Concepts often test identification of real-world simple machines, and wheelbarrows are a common example.

The passage emphasizes permits as tools for safety authorization and control documentation. Option B is correct. CAST Reading Comprehension frequently requires drawing the intended purpose from safety procedure texts.

Hypotenuse = √(9² + 12²) = √(81 + 144) = √225 = 15 ft. Option B is correct. CAST Graphic Arithmetic often applies the Pythagorean theorem.