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 42 foot by height 39 yards is 21932.9754777 foot2 or 2436.9972753 yards2.


The surface area of a cone is equal to the area of the base plus the area of the cone. If the cone Radius 42 foot by height 39 yards is 21932.9754777 foot2 or 2436.9972753 yards2.


    Surface Area of a Cone 42 ft by 39 yd in other units

Value unit
6.6851709 km2
4.153983 mi2
6685.1709256 m2
21932.9754777 ft2
263195.7057324 in2
7310.9918259 yd2
668517.0925603 cm2
6685170.925603 mm2

Steps:

Given that Base radius(r) = 42 ft and height(h) = 39 yd

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

Substitute the values of the radius r = 42 ft and height h = 39 yd into the formula. Pi (π) is approximately equal to 3.14 .

      Unit Conversion of 39 yd = 117.0 ft

39 Yards is 117.0 foots

To convert Yards to Foot

we know that, 1 Yards = 3 Feet

To convert Yards to Foot, multiply the yard value by 3.

Result in Feet: 39 yd x 3 × ft/yd

Cancel The Comman factor of yd

Result in Feet: (39 x 3 ft)

Multiply 39 into 3

Result in Feet: 117.0 feets

∴ 39 Yards = 117.0 foots


$(π⋅(42))$⋅ $(42$ + $\sqrt{(42)^2 + (117.0)^2})$ ft

Move 42 to the left of π.

$(42π)$⋅$ (42$ + $\sqrt{(42)^2 + (117.0)^2}$

Simplify each term

Raise 42 ft to the power of 2 and 117.0 to the power of 2

$(42π)$⋅$ (42$ + $\sqrt{(1764.0) + (13689.0)}$ ft

Add 1764.0 ft and 13689.0 ft

$(42π)$ ft⋅$ (42$ + $\sqrt{(15453.0)}$ ft

Multipy 42π ft and 42 ft

1764.0π ft + (42π . $\sqrt{ 15453.0 }$) ft


Put the value of $\sqrt{ 15453.0 }$ = 124.3100961 in formula

1764.0π ft + (42π . 124.3100961) ft

Mulitply the 42π and 124.3100961

1764.0π ft + (5221.0240375π)

Add 1764.0π ft and 5221.0240375π ft

The result can be shown in multiple forms

Exact Form

Area = 6985.0240375π ft

∴ Surface Area of Cone 42 ft by 39 yd is 6985.0240375π ft2

Decimal Form

21932.9754777 ft2

∴ Surface Area of Cylinder 42 ft by 39 yd is 21932.9754777 ft2

or

      Unit Conversion of 42 ft = 14.0 yd

42 Feet is 14.0 yards

To convert Feet to Yards

we know that, 1 Foot = 0.333333 or
                        1 Foot = 1/3 Yards

To convert Feet to Yards, divide the feet value by 3

Result in Yards: 42 × ft/yd × ft/yd

Cancel The Comman factor of ft

Result in Yards: 42/3 yd

Divide the 42 by 3

Result in Yards: 14.0 yards

∴ 42 Feet = 14.0 yards


$(π⋅(14.0))$⋅ $(14.0$ + $\sqrt{(14.0)^2 + (39)^2})$ yd

Move 14.0 to the left of π.

$(14.0π)$⋅$ (14.0$ + $\sqrt{(14.0)^2 + (39)^2}$

Simplify each term

Raise 14.0 yd to the power of 2 and 39 to the power of 2

$(14.0π)$⋅$ (14.0$ + $\sqrt{(196.0) + (1521.0)}$ yd

Add 196.0 yd and 1521.0 yd

$(14.0π)$ yd ⋅ $ (14.0$ + $\sqrt{(1717.0)}$ yd

Multipy 14.0π yd and 14.0 yd

196.0π yd + (14.0π . $\sqrt{ 1717.0 }$) yd

Put the value of $\sqrt{1717.0}$ = 41.4366987 in formula

196.0π yd + (14.0π . 41.4366987) yd

Mulitply the 14.0π and 41.4366987

196.0π yd + (580.1137819π)

Add 196.0π yd and 580.1137819π yd

The result can be shown in multiple forms

Exact Form

Area = 776.1137819π yd

∴ Surface Area of Cone 42 ft by 39 yd is 776.1137819π ft2

Decimal Form

2436.9972753 yd2

∴ Surface Area of Cylinder 42 ft by 39 yd is 2436.9972753 ft2