Please help me, someone!
1 answer:
Answer:
76.275
Step-by-step explanation:
First - the entire circles area is 78.54. with r being 5
6 triangles of that size could fit in that circle.
A=3/(2) * a2
The area of that would equal 64.95
78.54-64.95 = 13.59
then divide that number by 6
which is 2.265.
Take that number from the original 78.54
78.54-2.265 = 76.275
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Answer:
x = ± - 2
Step-by-step explanation:
x² + 4x = 4
to complete the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(2)x + 4 = 4 + 4
(x + 2)² = 8 ( take square root of both sides )
x + 2 = ± ( subtract 2 from both sides )
x = ± - 2