<u>Answer:</u>
The total cost for the family was $16
<u>Step-by-step explanation:</u>
Given:
Number of adult tickets = 2
Number of children ticket = 3
To Find:
The total cost of the family = ?
Solution:
The total cost of the family = cost for buying 2 adult tickets + cost of buying 3 children tickets
=> 
=> 10 + 6
=> 16
Answer:
6.28km
Step-by-step explanation:
Hey,
We know that the circumfrence is the perimetert of a full circle. If we want to find the perimeter of a semicircle all we have to do is find the circumfrence and then divide it by 2 since we want to know the perimeter of half the circle.
Circumfrence is equal to 2πr. Where r is the radius and since we know the radius we an solve for the circumfrence.
2(π)(1km)=2kmπ.
The problem tells us to use 3.14 for pi so let's multiply 2 by 3.14.
6.28km is the answer!