Rhomboid

Calculate the circumference and area of the rhomboid with sides 20 and 14, with their angle 50°.

Correct result:

S =  95.7656
o =  68

Solution:

a=20 b=14 A=20∘→ rad=20∘⋅ π180 =20∘⋅ 3.1415926180 =0.34907=π/9  S=a⋅ b⋅ sin⁡(A)=20⋅ 14⋅ sin⁡(0.3491)=95.7656
o=2⋅ (a+b)=2⋅ (20+14)=68

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