Find the area of the semicircle

905

Step-by-step explanation:

area= 1/2(πr²)

=1/2(3.14 x 24²)

=1/2(1808.64)

=904.62 approximately 905

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,

i agree because i see the other persons thinking is clear