Answer:
7/10 or 70%.
Step-by-step explanation:
There is a total of 20 marbles in the bag.
There are 10 + 4 = 14 marbles which are not blue.
The required probability = 14/20
= 7/10.
Answer: The answer is C. 2
Step-by-step explanation:
Answer:
1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 =55
Step-by-step explanation:
The formula for finding area of a circle is

.
Essentially, we have two circles here. One is a larger outer circle, and the other in a smaller inner circle. In order to find the area of the sidewalk, we must find the area of the outer circle, then find the are of the inner circle. After we find both areas, we subtract.
See attached image for process of finding area, and subtracting areas to find the final area of the sidewalk.
Answer:
792 m
Step-by-step explanation:
perimeter of a rectangle = 2l + 2b
⇒ perimeter of ground = (2 x 42) + (2 x 24) = 132 m
Perimeter = 1 round
⇒ 6 rounds = 6 x 132 = 792 m