Answer:
BEC is 90 degrees
Step-by-step explanation:
Answer:
Dear (your friend name)
Hope you are doing well. I have joined my boarding school, and writing this letter as per your demand to tell my experience.
have joined my boarding school, and writing this letter as per your demand to tell my experience.I came here about two days back. The school is eco friendly with multicoloured flowers and a field full of greenery. My hostel rooms and classrooms, both are highly ventilated and sun-facing. During these summer times, we don't need an air conditioner at all.
have joined my boarding school, and writing this letter as per your demand to tell my experience.I came here about two days back. The school is eco friendly with multicoloured flowers and a field full of greenery. My hostel rooms and classrooms, both are highly ventilated and sun-facing. During these summer times, we don't need an air conditioner at all.My classmates are good and I made few friends as well. The same is for hostel roommates too. Food too is very delicious here. We have playing time and television time as well.
have joined my boarding school, and writing this letter as per your demand to tell my experience.I came here about two days back. The school is eco friendly with multicoloured flowers and a field full of greenery. My hostel rooms and classrooms, both are highly ventilated and sun-facing. During these summer times, we don't need an air conditioner at all.My classmates are good and I made few friends as well. The same is for hostel roommates too. Food too is very delicious here. We have playing time and television time as well.Here everyone is very disciplined and strict for their routine and studies. Overall the environment is very nice here. Do write about what's going with you.
have joined my boarding school, and writing this letter as per your demand to tell my experience.I came here about two days back. The school is eco friendly with multicoloured flowers and a field full of greenery. My hostel rooms and classrooms, both are highly ventilated and sun-facing. During these summer times, we don't need an air conditioner at all.My classmates are good and I made few friends as well. The same is for hostel roommates too. Food too is very delicious here. We have playing time and television time as well.Here everyone is very disciplined and strict for their routine and studies. Overall the environment is very nice here. Do write about what's going with you.
Love
(JOE or Gabriel)
HOPE THIS HELPED
Answer:
The radius is 5 cm
Step-by-step explanation:
The formula for the area of a circle is : 
To work out the length of the radius you would first need to divide the area of 78.5 cm by pi (pi=3.14), this gives you
. This is because by dividing the area by pi we are isolating the value of the radius squared.
The final step is to work out the radius. You can do this by finding the square root of the radius squared which is 25, this gives you 5 cm. This means that the radius is 5 cm. This is because the square root is a number that when squared equals that number.
1) Divide 78.5 by pi.

2) Find the square root of 25 cm squared.

In this question pi is 3.14
80p=pr^2+p(2r)^2
80p=pr^2+4pr^2
80=r^2+4r^2
80=5r^2
16=r^2
r=4 for the smaller circle´s radius, and 8 is the larger circle´s radius.
Have a nice day, I hope this was helpful :D