Find the area of the circle. use 22/7 for pie

 2464 in²

Step-by-step explanation: The formula for the area of a circle is

A = πr²

The given radius is 28 inches.

Square that 28 × 28 = 784 square inches.

Then multiply by pi.

22/7 × 784 = 2464 square inches.

50- 250 is correct i did that one too

step-by-step explanation:

7.9m and 4.3°

step-by-step explanation:

let east be +x and north be +y, x = distance * cos θ, y = distance * sin θ  

for 3.5 south, y = -3.5  

for 8.2, x = 8.2 * cos 30 and y = 8.2 * sin 30  

for 15 west, x = -15  

total x = 8.2 * cos 30 – 15 ≈ -7.9  

total y = -3.5 + 8.2 * sin 30 = 0.6  

magnitude = [(8.2 * cos 30 – 15)^2 + 0.6^2)]^0.5  

the magnitude is approximately 7.9 m  

tan θ = y/x = 0.6/-7.9  

the angle is approximately 4.3˚ north of west