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 73 yards by height 21 yards is 34144.7294911 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 73 yards by height 21 yards is 34144.7294911 yards2.


    Surface Area of a Cone 73 yd by 21 yd in other units

Value unit
31.2219406 km2
19.4004627 mi2
31221.9406467 m2
102434.1884733 ft2
1229210.2616796 in2
34144.7294911 yd2
3122194.0646662 cm2
31221940.6466618 mm2

Steps:

Given that Base radius(r) = 73 yd and height(h) = 21 yd

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

Substitute the values of the radius r = 73 yd and height h = 21 yd into the formula. Pi (π) is approximately equal to 3.14 .

$(π⋅(73))$⋅ $(73$ + $\sqrt{(73)^2 + (21)^2})$

Move 73 to the left of π.

$(73π)$⋅$ (73$ + $\sqrt{(73)^2 + (21)^2}$

Simplify each term

Raise 73 yd to the power of 2 and 21 to the power of 2

$(73π)$⋅$ (73$ + $\sqrt{(5329.0) + (441.0)}$ yd

Add 5329.0 yd and 441.0 yd

$(73π)$ yd⋅$ (73$ + $\sqrt{(5770.0)}$ yd

Multipy 73π yd and 73 yd

5329.0π yd + (73π . $\sqrt5770.0$)yd

Put the value of $\sqrt5770.0$ = 75.9605161 in formula

5329.0π yd + (73π . 75.9605161) yd

Mulitply the 73π and 75.9605161

5329.0π yd + (5545.1176723π)

Add 5329.0π yd and 5545.1176723π yd

The result can be shown in multiple forms

Exact Form

Area = 10874.1176723π yd

∴ Surface Area of Cone 73 yd by 21 yd is 10874.1176723π yd2

Decimal Form

34144.7294911 yd2

∴ Surface Area of Cylinder 73 yd by 21 yd is 34144.7294911 yd2