Answer question 7 please?

B. 500

// The houses and the street corner

// form a right-triangle with sides

// 400m and 300m; walking through

// the field is the same as tracing the

// hypotenuse of the right triangle.

// Use the Pythagorean Theorem

// to solve for the hypotenuse

A² + B² = C²

400² + 300² = C²

C² = 250000

C = √250000

C = 500m...................ANS (Option B)

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