The formula for surface area of a cone = 2pi rh
the radius of the base = 12inches
by the pythagoras theorem, 400 - 144 = 256 =16^2
therefore the height of the cone = 16inches
the surface area of the cone= 16 × 24pi
=384pi inches
please mark as brainliest
Answer:
7
Step-by-step explanation:
x-7=7-x
2x-7=7
2x=14
x=7
Answer:
x = 2.2
Step-by-step explanation:
-15 + 12x = 5x + 7 - 3x
Combine like terms
-15 +12x = 2x +7
Subtract 2x from each side
-15 +12x -2x = 2x-2x +7
-15 +10x = 7
Add 15 from each side
-15+15 +10x = 7+15
10x = 22
Divide each side by 10
10x/10 = 22/10
x = 2.2
3 x 18 = $54
2 x 3.99 = $7.98
1 x 45.00 = $45.00
Add: $54 + 7.98 + 45 = $106.98
Multiply: $106.98 x 0.085 = 9.093
Add: $106.98 + $ 9.09 = $116.07
He paid $116.07 total.
