Answer:
452.4 cm^2
Step-by-step explanation:

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Answer:
P-l/2 = w
Step-by-step explanation:
First you divide both sides by 2 then you subtract L from both sides leaving you with P minus L / 2 equals W.
Answer:
The area of sector AOB is 75.36 unit²
Step-by-step explanation:
Consider the provided information.
Circle O with minor arc AB=60 degrees and OA =12.
We need to find the area of sector.
Area of the sector: 
Substitute
and r =12 in above formula.




Hence, the area of sector AOB is 75.36 unit²
1) a.30
3) complementary: 12 and 78
supplementary: 102 and 78