What is the area of a regular octagon with a side length of 5.8 centimeters and an apothem length of 7 centimeters?

Can someone me my sister? she is in third grade. 50 points and brainlist! ones that are not answered. plz and thx!

Which formula finds the probability that a point on the grid below will be in the blue area? p(blue) = total number of squares number of blue squares number of blue squares p(blue) = total number of squares number of blue squares p(blue) = number of white squares

You paid 28.00 for 8 gallons of gasoline. how much would you pay for 15 gallons of gasoline?