Answer:
6.8
Step-by-step explanation:
Greater angle: 180 - 64 = 116
Diagonal² = 4² + 4² - 2(4)(4)cos(116)
Diagonal² = 46.0278767
Diagonal = 6.784384769
Step-by-step explanation:
Greater angle: 180 - 64 = 116
Diagonal² = 4² + 4² - 2(4)(4)cos(116)
Diagonal² = 46.0278767
Diagonal = 6.784384769