Answer:
x = -5/2
Step-by-step explanation:
4−(2x+4)=5
Distribute the minus sign
4 - 2x -4 = 5
-2x =5
Divide by -2
-2x/-2 = 5/-2
x = -5/2
V = pi r^2 h
54 = 3.14 * r^2 * 6
54 = 18.84 r^2
Divide both sides by 18.84
r^2 = 2.866
Square root both sides
r = 1.7
4 cm squared because you count the whole shaded squares and add up the halves.
Multiply 10 cm by 0.4 and mult. 30 cm by 0.4 also:
The height of the smaller triangle is then 4 cm and the length of the base is 12 cm.
