Question

Please answer this correctly

Answer 1

Answer:

20.57.......

Step-by-step explanation:

use thetha/360×πr^2 +2×4

here thetha = 90 degree

Answer 2

Answer:

Step-by-step explanation:

To find the length of arc =

1/4 * 2πr = (1/2*3.14*4) feet =

(3.14*2) feet = 6.28 feet (approx)

Now total perimeter of the sector given = ( 6.28+4+4) feet

=14.28 feet