Answer: ? Wha?
Step-by-step explanation:
The perimeter (62 cm) is twice the length plus twice the width.
The length plus twice the width is given as 42 cm. The difference between these sums is the length, 20 cm.
X = 2.
Set up your equation like this:
3x + 4x = 14
7x = 14
x = 2
Hope this helped
Answer:
Volume = area of circle × height of cylinder
Step-by-step explanation:
To find the area of the circle (the top of the cylinder), use pi times r squared. Then take that and multiply it by the height of the cylinder. That should be your volume.
Answer:
21 + 220i
Step-by-step explanation:
reminder that i² = - 1
(- 11 - 10i)²
= (- 11 - 10i)(- 11 - 10i) ← expand using FOIL
= 121 + 110I + 110I + 100I²
= 121 + 220I + 100(- 1)
= 121 + 220i - 100
= 21 + 220i
