If a2= 18 and a4= 8, find two possible common ratios. Then, write two sequences lhaving five terms each.
1 answer:
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Answer:
3) y = 2
Step-by-step explanation:
Step : 1
given 2 y-1 =3
Adding '1 ' on both sides, we get
2 y -1 +1 = 3+1
2 y = 4
dividing by '2' on both sides, we get
cancelling '2' on both sides, we get
y = 2
Answer: 410 square km
Step-by-step explanation:
The area of each of the triangles with their base on the 10 km side is , so their combined area is
.
The area of each of the triangles with their base on the 12 km side is , so their combined area is
.
The area of the bottom rectangular face is .
So, the total surface area is