Answer:
x=3
Step-by-step explanation:
1.4x+1.1=8.3-x
1.4x+x=8.3-1.1
2.4x=7.2
x=7.2/2.4
a, 7C5 = 21 ways
b, 11C5 = 462 ways
a+4=
A cube has 6 faces. The surface area of a cube is 6 times the area of one face.
SA = 6s^2
SA = 6 * 6cm^2
SA = 6 * 36cm^2
SA = 216cm^2
Givens
pi = 3.14
d = 10 cm
h = 2*d
Formula
The combined formula is given below.
SA = 2*pi*r^2 + 2*pi*r * h
Conversions
h = 2*10
h = 20 cm
r = d/2
r = 10 / 2
r = 5cm
Solution
SA = 2*3.14*5^2 + 2*3.14*5*20
SA = 157 + 628
SA = 785 cm^2
Answer: The surface area is 785 cm^2
