PLEASE HELP WILL MARK BRAINLIST Use the diagram below to answer questions 4 and 5
CIR-2
4
1 point
Find the circumference of the circle. Round to the nearest hundredth.
21 ft
Type your answer
5
1 point
Find the area of the circle. Round to the nearest hundredth.
Type your answer

C = 65.94 ft and A = 346.185 ft^2

Step-by-step explanation:

r = d/2 = 21/2 = 10.5

let = 3.14

C = 2r

C = 2(3.14)(10.5) = 65.94 ft

A = r^2

A = (3.14)(10.5)^2 = 346.185 ft^2

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this