Answer:18
Step-by-step explanation:
Answer:
x = 42
Step-by-step explanation:
2/7x = 12
Divide 2/7 from both sides
x = 12 / (2/7) = 12 * 7/2 = 42
To find the circumference (c) use the formula (pi d) in other words 3.14 x diameter
To find the radius to find the diameter: 2R (double the radius)
To find radius 1/2 D (half the diameter)
Answer:
Step-by-step explanation:
Answer:
x²+y²+z²+2xy-2yz-2zx
Step-by-step explanation:
{(x+y)-z}^2
=(x+y)²-2(x+y)z+z²
=x²+2xy+y²-2zx-2yz+z²
=x²+y²+z²+2xy-2yz-2zx