Khan academy unit test!

a circle with radius 3 has a sector with a central angle of 9/17 π radians .

what is the area of the sector?

The area of sector is 7.48 unit²

Step-by-step explanation:

Given as :

The radius of circle = r = 3 unit

The measure of central angle =Ф = radian

Let The area of sector = A unit²

Now, According to question

Area of sector = π× radius × radius ×

Or, A = π× r × r ×

Or, A = π× r × r ×

where  π = 3.14

∵ 180° = π radian

So, 360° = = 2 π radian

Or,, A = π× r × r ×

Or, A =  π× r × r ×

Or, A = 3.14 × 3 unit × 3 unit ×

Or, A = 3.14 × 3 unit × 3 unit × 0.2647

∴   A = 7.48 unit²

So,The area of sector = A = 7.48 unit²

Hence, The area of sector is 7.48 unit²  Answer

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

12

step-by-step explanation:

12 + 5 = 17

12x2=24

24-7=17