The radius of a circle is 8 kilometers. What is the area of a sector bounded by a 90 degree arc

≈ 100.53 Km²

Step-by-step explanation:

The area (A) of the sector is calculated as

A = area of circle × fraction of circle

   = πr² ×

   = π × 8² ×

   = 64π × 0.5 = 32π ≈ 100.53 Km² ( to 2 dec. places )

Step-by-step explanation:

radius=8

θ=90 degree or 90 ×π/180 = 1.57079 approximately to 1.5708 radian

area of sector=?

area of sector =½×r ²×θ

= ½×8² × 1.5708

= 50.2656

yes

step-by-step explanation:

so of course you want to start by plugging the 5 in which goes to 7(5)+3(5)=50 because 7*5=35 and 3*5=15 and then add them together, then plug in the 5 to the other equation as well 9(5)+5=50 because 9*5= 45 and then add 5 and so yes they are equivalent.