Answer:
Step-by-step explanation:
we know that
The area of the shaded region is equal to the area of the sector minus the area of the triangle
step 1
Find the area of the circle
the area of the circle is equal to
we have
substitute
step 2
Find the area of the sector
we know that
The area of the circle subtends a central angle of 360 degrees
so
by proportion find out the area of a sector by a central angle of 72 degrees
step 3
Find the area of triangle
The area of the triangle is equal to
step 4
Find the area of the shaded region
Subtract the area of the triangle from the area of the sector
Answer:
D
Step-by-step explanation:
because u use 160 divided by 5/8 but u have to reverse it so it is 160 times 8/5.
Answer:
460 million = 4.6 x 10^8
Step-by-step explanation:
Answer:
x = ± 2
Step-by-step explanation:
x² + 1 = 25 ( subtract 1 from both sides )
x² = 24 ( take square root of both sides )
x = ± = ± = × = ± 2
x = - 2 , x = 2