Answer:38
Step-by-step explanation:
triangle=3*1=3
decagon=10*1=10
pentagon=5*5=25
3+10+25=38
Area of the pentagon: 342 cm2
Step-by-step explanation:
The figure of the pentagon is missing: find it in attachment.
The area of the pentagon can be seen as the area of 5 equal triangles, each of them having a base equal to the length of the side of the pentagon,
L = 14.1 cm
and the height of each triangle can be found by using Pythagorean's theorem:

The area of each of the 5 triangles is

Therefore, the area of the pentagon is 5 times this area:
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There are 4 terms in the expression.
Terms are each of the entities.
4x, + 3y , -12x, +5
The answer i do believe is 1/2