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Chapter 3: Q. 216 (page 373)

A triangular courtyard has perimeter120 meters. The lengths of two sides are30 meters and50 meters. How long is the third side?

Short Answer

Expert verified

Third side is 40meters

Step by step solution

01

Step 1. Given information

A triangular courtyard has perimeter 120meters. The lengths of two sides are 30meters and 50 meters.

02

Step 2. Third side

The parameter is the sum of all three sides.

Let the third side be x,

Therefore

30+50+x=12080+x=120x=120-80x=40

03

Step 3. Verification

Verify the third side as,

30+50+40=120120=120

LHS is equal to RHS.

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