-3+9-27+81-243+729. Using the sigma notation to write the given sum
1 answer:
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Answer:
99.0 in²
Step-by-step explanation:
The area (A) of the sector of the circle is calculated as
A = area of circle × fraction of circle
= πr² × ( where r is the radius )
Here r = 9, thus
A = π × 9² ×
= 81π × ≈ 99.0 in²
Answer:
46
Step-by-step explanation:
The complete square starting with would be
, since the square would be
. To make this square perfect, then, you would need to add 46 to make 49 with the 3. Hope this helps!