Area = 50.27 ft squared
area of circle = πr^2
a = π(4^2)
a = π16
a = 50.27
π = about 3.14159
3.14159(16) = 50.26544 --> 50.27
Ratio of shadow to object's size = 2/7
Then, size of tree would be: 7/2 * 28 = 7 * 14 = 98 feet
So, your final answer is 98 feet
Hope this helps!
2 is the other factor. 24/2= 12
20/2=10
36/2=18
<span>x = ((1200) / (0.5525) = 2,179.94570</span>
.5 means half. 12 x 2 is 24. so, your equation would be x/2=12