Answer:
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Step-by-step explanation:
Answer:
14.4 inches
Step-by-step explanation:
Use the Pythagorean theorem: 
So, this will be: 
By simplifying we get:
c = 
The missing side is: 14.4 (rounded to the tenth)
The perimeter is 36 and the area is 81 units
hope this helps:)
Answer:
i do not understand
Step-by-step explanation:
Answer:
76.53 cm
Step-by-step explanation:
From the question, the triangle formed has 2 sides and an included angle ;
Angle, θ = C = 45°
We use cosine rule :
Taking the side to find as c
a = 100 ; b = 100
From cosine rule :
c = sqrt(a² + b² - 2abCosC)
c = sqrt(100² + 100² - 2(100*100)Cos45
c = sqrt(10000 + 10000 - 20000 * 0.7071067)
c = sqrt(20000 - 14142.135)
c = sqrt(5857.865)
c = 76.536690
c = 76.53 cm