9. A rectangular field 50 meters in width and 120 meters in length is divided into two fields by a diagonal line. Find the length of fence in meters required to enclose one of these fields?

A.130
B.170
C.180
D.200
E.300
Choice A is wrong.

3 answers

Pythagorean Theorem:

50^2 + 120^2 = diagonal squared

2500 + 14,400 = d^2

16,900 = d^2

130 = d

Add the three sides together to find the perimeter.

300

Correct.

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