Answer:
12.57 yards
Step-by-step explanation:
The circumference of a circle is denoted by:
, where d is the diameter.
Here, we are given the diameter, so d = 4.
Now, plug this into the equation:

≈ 12.57
The circumference is about 12.57 yards.
Hope this helps!
Answer:
10 1/10
Step-by-step explanation:
22/5 + 31/10 + 13/5
44/10 + 31/10 + 26/10
101/10
10 1/10
Volume of a cube: V = s^3, where s is the length of the edge.
So, the sum of them will be 1^3 + 2^3 = 9
The last option :1 over negative 6 is equivalent to negative one over six
Answer:
i) 28 - 30i
ii) 36 + 28i
Step-by-step explanation:
i) x = 6 + i ⇒2x = 2(6 + i) = 12 + 2i
z = 4 - 8i ⇒ 4z = 4(4 - 8i) = 16 - 32i
2x + 4z = (12 + 2i) + (16 - 32i) = 28 - 30i
ii) w = -1 + 5i and z = 4 - 8i
w × z = (-1 + 5i)(4 - 8i) = -4 + 8i + 20i - 40
⇒collect like terms
w × z = -4 + 28i - 40
∵ 
∴w × z = -4 + 28i - 40(-1) = -4 + 28i + 40 = 36 + 28i