Created By : Abhinandan Kumar

Reviewed By : Rajashekhar Valipishetty

Last Updated : May 30, 2023


Enter the value of base radius(r)

Enter the Value of height(h)


If the cone Radius 18 foot by height 65 meters is 13113.3695114 foot2 or 1218.2718565 meters2.


The surface area of a cone is equal to the area of the base plus the area of the cone. If the cone Radius 18 foot by height 65 meters is 13113.3695114 foot2 or 1218.2718565 meters2.


    Surface Area of a Cone 18 ft by 65 m in other units

Value unit
3.996955 km2
2.4835989 mi2
3996.9550271 m2
13113.3695114 ft2
157360.4341368 in2
4371.1231705 yd2
399695.5027075 cm2
3996955.0270747 mm2

Steps:

Given that Base radius(r) = 18 ft and height(h) = 65 m

Surface Area of a Cone = $(π⋅(Radius))$⋅($(Radius)$ + $\sqrt{(Radius)^2+(Height)^2}$)

Substitute the values of the radius r = 18 ft and height h = 65 m into the formula. Pi (π) is approximately equal to 3.14 .

      Unit Conversion of 65 m = 213.2546 ft

65 Meters is 213.2546 foot

To convert Meters to Foot

we know that, 1 Meter = 3.28084 Foot

To convert Meter to Foot, multiply the meter value by 3.28084.

Result in Foot: 65 m × 3.28084 × ft/m

Cancel The Comman factor of m

Result in Foot: (65 x 3.28084 ft)

Multiply 65 into 3.28084

Result in Foot: 213.2546 foot

∴ 65 Meters = 213.2546 foot


$(π⋅(18))$⋅ $(18$ + $\sqrt{(18)^2 + (213.2546)^2})$ ft

Move 18 to the left of π.

$(18π)$⋅$ (18$ + $\sqrt{(18)^2 + (213.2546)^2}$

Simplify each term

Raise 18 ft to the power of 2 and 213.2546 to the power of 2

$(18π)$⋅$ (18$ + $\sqrt{(324.0) + (45477.5244212)}$ ft

Add 324.0 ft and 45477.5244212 ft

$(18π)$ ft⋅$ (18$ + $\sqrt{(45801.5244212)}$ ft

Multipy 18π ft and 18 ft

324.0π ft + (18π . $\sqrt{ 45801.5244212 }$) ft


Put the value of $\sqrt{ 45801.5244212 }$ = 214.0129071 in formula

324.0π ft + (18π . 214.0129071) ft

Mulitply the 18π and 214.0129071

324.0π ft + (3852.2323285π)

Add 324.0π ft and 3852.2323285π ft

The result can be shown in multiple forms

Exact Form

Area = 4176.2323285π ft

∴ Surface Area of Cone 18 ft by 65 m is 4176.2323285π ft2

Decimal Form

13113.3695114 ft2

∴ Surface Area of Cylinder 18 ft by 65 m is 13113.3695114 ft2

or

      Unit Conversion of 18 ft = 5.4864 m

18 Foot is 5.4864 meters

To convert Feet to Meter

we know that, 1 Foot = 0.3048 Meter

To convert Foot to meters, multiply the feet value by 0.3048.

Result in Meter: 18 ft × 0.3048 × m/ft

Cancel The Comman factor of ft

Result in Meters: (18 x 0.3048 m)

Multiply 18 into 0.3048

Result in Meters: 5.4864 meters

∴ 18 Foot = 5.4864 meters


$(π⋅(5.4864))$⋅ $(5.4864$ + $\sqrt{(5.4864)^2 + (65)^2})$ m

Move 5.4864 to the left of π.

$(5.4864π)$⋅$ (5.4864$ + $\sqrt{(5.4864)^2 + (65)^2}$

Simplify each term

Raise 5.4864 m to the power of 2 and 65 to the power of 2

$(5.4864π)$⋅$ (5.4864$ + $\sqrt{(30.10058496) + (4225.0)}$ m

Add 30.100585 m and 4225.0 m

$(5.4864π)$ m ⋅ $ (5.4864$ + $\sqrt{(4255.100585)}$ m

Multipy 5.4864π m and 5.4864 m

30.100585π m + (5.4864π . $\sqrt{ 4255.100585 }$) m

Put the value of $\sqrt{4255.100585}$ = 65.231132 in formula

30.100585π m + (5.4864π . 65.231132) m

Mulitply the 5.4864π and 65.231132

30.100585π m + (357.8840827π)

Add 30.100585π m and 357.8840827π m

The result can be shown in multiple forms

Exact Form

Area = 387.9846677π m

∴ Surface Area of Cone 18 ft by 65 m is 387.9846677π ft2

Decimal Form

1218.2718565 m2

∴ Surface Area of Cylinder 18 ft by 65 m is 1218.2718565 ft2