Surface Area of a Cone 77 foot by 66 foot Calculator
If the cone Radius 77 foot by height 66 foot is 43137.1760477 foot2.
The surface area of a cone is equal to the area of the base plus the area of the cone. If the cone Radius 77 foot by height 66 foot is 43137.1760477 foot2.
Surface Area of a Cone 77 ft by 66 ft in other units
Value | unit |
---|---|
13.1482113 | km2 |
8.16994 | mi2 |
13148.2112593 | m2 |
43137.1760477 | ft2 |
517646.1125724 | in2 |
14379.0586826 | yd2 |
1314821.1259339 | cm2 |
13148211.259339 | mm2 |
Steps:
Given that Base radius(r) = 77 ft and height(h) = 66 ft
Surface Area of a Cone = $(π⋅(Radius))$⋅($(Radius)$ + $\sqrt{(Radius)^2+(Height)^2}$)
Substitute the values of the radius r = 77 ft and height h = 66 ft into the formula. Pi (π) is approximately equal to 3.14 .
$(π⋅(77))$⋅ $(77$ + $\sqrt{(77)^2 + (66)^2})$
Move 77 to the left of π.
$(77π)$⋅$ (77$ + $\sqrt{(77)^2 + (66)^2}$
Simplify each term
Raise 77 ft to the power of 2 and 66 to the power of 2
$(77π)$⋅$ (77$ + $\sqrt{(5929.0) + (4356.0)}$ ft
Add 5929.0 ft and 4356.0 ft
$(77π)$ ft⋅$ (77$ + $\sqrt{(10285.0)}$ ft
Multipy 77π ft and 77 ft
5929.0π ft + (77π . $\sqrt10285.0$)ft
Put the value of $\sqrt10285.0$ = 101.414989 in formula
5929.0π ft + (77π . 101.414989) ft
Mulitply the 77π and 101.414989
5929.0π ft + (7808.9541553π)
Add 5929.0π ft and 7808.9541553π ft
The result can be shown in multiple forms
Exact Form
Area = 13737.9541553π ft
∴ Surface Area of Cone 77 ft by 66 ft is 13737.9541553π ft2
Decimal Form
43137.1760477 ft2
∴ Surface Area of Cylinder 77 ft by 66 ft is 43137.1760477 ft2