Answer:
Area = PI * radius^2
radius = Sq Root (Area / PI)
radius = Sq Root (78.5 / PI)
radius = Sq Root (24.9873260654)
radius = 4.9987
radius = 5 (rounded)
Step-by-step explanation:
First you had to expanded form.


Finally you can also add by similar to elements.


Final answer: 
Hope this helps!
And thank you for posting your question at here on brainly, and have a great day.
-Charlie
Answer:
Right angled triangle
Step-by-step explanation:
This is because the square root of the sum of the squares of 7 and 24 is 25 ( Pythagoras theorem) . This only works for right angled triangle.
Answer:
6 (v-3)^2
Step-by-step explanation:
6v^2–36v+54
Factor out a 6
6(v^2–6v+9)
Then factor inside the parentheses
What 2 numbers multiply to 9 and add to -6
-3*-3 =9 -3+-3 = -6
6( v-3)(v-3)
6 (v-3)^2
Answer:
meh
Step-by-step explanation: