The actual area is 454.1 ft.
You can use a ratio to find the actual diameter:
18cm/3cm = x/4ft.
x = 24 ft.
Then find the area using A=pi*r^2
A=pi*144
A=452.4 ft.
Answer:The answer can be calculated by doing the following steps;
Step-by-step explanation:
I think you have done some mistakes in question because at one stage there comes a complex no. And at the end the value of n comes in decimal.
Answer:
135 square feet
Step-by-step explanation:
area of base and top=2(1/2×6×2.5)=15 square feet.
area of three faces=(2.5+6+6.5)×8=15×8=120 ft
total surface area=15+120=135 square feet.