Answer:
Step-by-step explanation:
7) Area = 615.75 sq. km
πr² = 615.75
3.14*r² = 615.75
r² = 615.75/3.14 = 196
r = √196
r = 14 km
8) circumference = 15.71 yards
πd = 15.71
3.14*d = 15.71
d = 15.71/3.14 = 5 yards
9)Area = 415.48 sq.inches
πr² = 415.48
3.14*r² = 415.48
r² = 415.48/3.14 = 132.31
r = √132.31
r = 11.5 inches
diameter = 11.5*2 = 23 inches
Answer:
x=27
Step-by-step explanation:
The formula for the volume of a pyramid is L*W*H/3
We know all three, being x, x, and x/9
So after we plug those in, we see that x^3/27 = 27
then solving for x we get √27*27 which is 27
Please Vote me brainly, it really helps, and i hope i helped you.
Answer:
see explanation
Step-by-step explanation:
To verify cos²A + sin²A = 1 with A = 90° , then
cos²90° + sin²90°
= (0)² + (1)²
= 0 + 1
= 1
Answer:
127
Step-by-step explanation:
Answer:
Relation 1 : Not a function
R2 : Function
R3: Function
R4: Not a function
