Question

What is the perimeter in units ?

Answer 1

6 (2 + √5) units

Explanation:

Finding the length of the 3rd side :

*Applying Pythagorean Theorem*

• VW² = 4² + 8²
• VW² = 16 + 64
• VW = √80
• VW = 6√5

The perimeter :

• 4 + 8 + 6√5
• 12 + 6√5
• 6 (2 + √5) units

Answer 2

12 +
`4√(5)` approximates to 20.944

Explanation:

VU - 8 units

UW - 4 units

VW -
`√(64+16) = √(80) =4√(5)`

12 + 4sqrt(5)