One number is 2 more than another. The difference between their squares is 20. What are the numbers?
1 answer:
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Answer:
A)
b) 3(3/5)
c) 1/3((2/3)-1/2))
Step-by-step explanation:
Answer:
85.6 cm^2
Step-by-step explanation:
The area of the central triangle bounded by each of the sides can be computed as ...
A = (1/2)r²sin(α) . . . . where α is the central angle, 360°/5 = 72°
There are 5 such triangles, so the area of the pentagon is ...
A = (5/2)(6 cm)²sin(72°) ≈ 85.595 cm²
The area of the regular pentagon of radius 6 cm is about 85.6 cm².
