Question

Just needed help on these questions I keep getting the incorrect answers can someone please help?


Question 1

Find the circumference of a circle with a diameter of 50.
Answer

a) 157.1

b)157.2

c) 157.3

d) 157.4


Question 2

Find the circumference of a circle with a radius of 4.
Answer

a) 23.4

b) 25.1

c) 26.7

d) 22.6


Question 3

Find the area of a circle with a radius of 10.
Answer

a) 314.5

b) 314.4

c) 314.3

d) 314

Question 4

Find the area of a circle with a radius of 21.
Answer

a) 1345.9

b) 1384.7

c) 1378.4

d) 1398.2

Answer 1

for the question 1 do you know how to find the circumference of a circle?

Answer 2

take a look at http://www.wikihow.com/Sample/Circumference-of-a-Circle-Diagram

Answer 3

for question 3&4 http://www.wikihow.com/Sample/Area-of-a-Circle-Diagram

Answer 4

Yes questions 1 is 157.1

Answer 5

yup