Area of the small circle = 
r
= 3.14 x 7= 153.86
Area of the big circle = R=3.14 x 14= 615.44
The shaded area = area of the big circle - area of 2 small circle = 615.44-2x153.84≅308
The answer is 308
Emma’s average speed in kph should be 54 kilometers per hour. I got this by putting 1 hour and 20 minutes into just minutes. which would be 80 minutes then dividing 72km by 80 minutes. Which gave me 0.9. Then multiplying 0.9 by 60 because there are 60 minutes in an hour. Which gave me 54 kph. hope I helped.
Answer:
47
Step-by-step explanation:
Example
3 ÷ 93
first, how many times does three go into nine
then,subtract that from nine
after that how many times does three go into three
