According to the map above, which of the following statements about tornado frequency in Oklahoma is true? a. All Oklahoma counties are equally at risk for tornado activity.
b. Oklahoma has received more tornadoes since 1950 than in the previous 50 years.
No Oklahoma county has had more than 100 tornadoes since 1950.
d. Every county in Oklahoma has had at least 10 tornadoes since 1950.
C.

Is a glitch? jaja support qin fen on his debut with awaken f 

In a right-angled triangle: 1- the hypotenuse is the longest side2- we can apply pythagorean rule which states that: (hypotenuse)^2 = (side1)^2 + (side2)^2for the given triangle,longest side is 15 cm  side1 = 9 cmside2 is 12 cm  to check whether the triangle is right-angled or not,compare (15)^2 to the summation of (9)^2 and (12)^in other words, compare 225 to the summation of 81 and 144if they are both equal, then the triangle is right-angles, otherwise, it is not.you haven't provided the diagram showing her work, so i cannot tell the choice. however, apply my explanation to the question you have.

2pi more meters because you find the circumference which is 6pi and 4pi and subtract it and you get 2pi