C=2pir
area=pir^2
given
c=25.12
25.12=2pir
pi=3.14
25.12=2(3.14)r
25.12=6.28r
divide both sides by 6.25
4=r
sub into other
area=pir^2
area=pi4^2
area=16pi
area=16(3.14)
area=50.24
the area is 50.24 square cm
Answer:
Step-by-step explanation:
Before giving the exterior angles, find the third angle. A triangle (all triangles) measure 180 degrees.
35 + 80 + x = 180
115 + x = 180
x = 180 - 115
x = 65
Exterior angles are supplements of the interior angles.
So the exterior angle to 65 degrees is 180 - 65 = 115
And the exterior angle to 35 degrees is 180-35 = 145
The exterior angle to 80 degrees is 180 - 100 = 80
Y = 44
180 - 88 = 92
180 - 92 = 88
88/2 = 44
180-40=140. 140/5 = 28
x= 28
angle B: 5(28) = 140
140 + 40 = 180
180=180
Answer:
D) 3 × (40 + 7) = 141
Step-by-step explanation:
(3 × 40 = 120) + (3 × 7 = 21) = 141