Equilateral Triangle

(the database of solved problems)

All the problems and solutions shown below were generated using the Equilateral Triangle Calculator.

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ID	Problem	Count
751	Find the circumcircle radius $ R $ of an equilateral triangle if incircle radius $r = 400\, \text{km}$.	2
752	Find the perimeter $ P $ of an equilateral triangle if perimeter $P = 10\, \text{ft}$.	2
753	Find the side $ a $ of an equilateral triangle if side $a = 11.5\, \text{ft}$.	2
754	Find the side $ a $ of an equilateral triangle if side $a = 25\, \text{mm}$.	2
755	Find the side $ a $ of an equilateral triangle if side $a = 8\, \text{ft}$ and perimeter $P = 24\, \text{ft}$.	2
756	Find the side $ a $ of an equilateral triangle if area $A = 20\, \text{mm}^2$.	2
757	Find the side $ a $ of an equilateral triangle if side $a = 30\, \text{cm}$.	2
758	Find the altitude $ h $ of an equilateral triangle if side $a = 30\, \text{cm}$.	2
759	Find the side $ a $ of an equilateral triangle if side $a = 825\, \text{mm}$.	2
760	Find the altitude $ h $ of an equilateral triangle if side $a = 20\, \text{ft}$.	2
761	Find the side $ a $ of an equilateral triangle if side $a = 20\, \text{mm}$ and perimeter $P = 60\, \text{mm}$.	2
762	Find the altitude $ h $ of an equilateral triangle if side $a = 61\, \text{mm}$.	2
763	Find the altitude $ h $ of an equilateral triangle if side $a = 61\, \text{in}$.	2
764	Find the side $ a $ of an equilateral triangle if side $a = 39\, \text{in}$.	2
765	Find the altitude $ h $ of an equilateral triangle if altitude $h = 30\, \text{in}$.	2
766	Find the altitude $ h $ of an equilateral triangle if side $a = 70\, \text{mm}$.	2
767	Find the area $ A $ of an equilateral triangle if side $a = 80\, \text{mm}$.	2
768	Find the side $ a $ of an equilateral triangle if circumcircle radius $R = 5\, \text{m}$.	2
769	Find the side $ a $ of an equilateral triangle if altitude $h = 28\, \text{in}$.	2
770	Find the side $ a $ of an equilateral triangle if area $A = 5\, \text{cm}^2$.	2
771	Find the side $ a $ of an equilateral triangle if area $A = 10\, \text{cm}^2$.	2
772	Find the area $ A $ of an equilateral triangle if side $a = 6.78\, \text{cm}$.	2
773	Find the side $ a $ of an equilateral triangle if side $a = 16\, \text{ft}$ and altitude $h = 17\, \text{ft}$.	2
774	Find the altitude $ h $ of an equilateral triangle if side $a = 12.5\, \text{mm}$.	2
775	Find the side $ a $ of an equilateral triangle if side $a = 48\, \text{in}$.	2
776	Find the side $ a $ of an equilateral triangle if side $a = 79\, \text{ft}$.	2
777	Find the side $ a $ of an equilateral triangle if area $A = 43.5\, \text{ft}^2$.	2
778	Find the area $ A $ of an equilateral triangle if side $a = 43.5\, \text{ft}$, altitude $h = 37.67\, \text{ft}$, perimeter $P = 130.5\, \text{ft}$, area $A = 819.37\, \text{ft}^2$, circumcircle radius $R = 25.11\, \text{ft}$ and incircle radius $r = 12.56\, \text{ft}$.	2
779	Find the side $ a $ of an equilateral triangle if incircle radius $r = 7\, \text{km}$.	2
780	Find the side $ a $ of an equilateral triangle if side $a = 3.7\, \text{mm}$, altitude $h = 2.8\, \text{mm}$, perimeter $P = 6.7\, \text{mm}$, area $A = 56.7\, \text{mm}^2$, circumcircle radius $R = 4.5\, \text{mm}$ and incircle radius $r = 2.5\, \text{mm}$.	2
781	Find the area $ A $ of an equilateral triangle if side $a = 1\, \text{mm}$.	2
782	Find the side $ a $ of an equilateral triangle if altitude $h = 4.33\, \text{in}$.	2
783	Find the side $ a $ of an equilateral triangle if altitude $h = 4.2\, \text{in}$.	2
784	Find the side $ a $ of an equilateral triangle if altitude $h = 5.25\, \text{in}$.	2
785	Find the altitude $ h $ of an equilateral triangle if side $a = 9\, \text{cm}$.	2
786	Find the side $ a $ of an equilateral triangle if altitude $h = 8\, \text{in}$.	2
787	Find the side $ a $ of an equilateral triangle if altitude $h = 8.5\, \text{in}$.	2
788	Find the side $ a $ of an equilateral triangle if perimeter $P = 24\, \text{cm}$.	2
789	Find the side $ a $ of an equilateral triangle if altitude $h = 4\, \text{cm}$.	2
790	Find the incircle radius $ r $ of an equilateral triangle if side $a = 8\, \text{ft}$.	2
791	Find the altitude $ h $ of an equilateral triangle if side $a = 7\, \text{ft}$.	2
792	Find the side $ a $ of an equilateral triangle if side $a = 19\, \text{mm}$.	2
793	Find the incircle radius $ r $ of an equilateral triangle if ???.	2
794	Find the incircle radius $ r $ of an equilateral triangle if side $a = 150\, \text{mm}$.	2
795	Find the side $ a $ of an equilateral triangle if side $a = 48\, \text{mm}$ and altitude $h = 138\, \text{mm}$.	2
796	Find the side $ a $ of an equilateral triangle if altitude $h = 5\, \text{ft}$.	2
797	Find the side $ a $ of an equilateral triangle if side $a = 1.4583\, \text{mm}$.	2
798	Find the side $ a $ of an equilateral triangle if perimeter $P = 4.375\, \text{mm}$.	2
799	Find the side $ a $ of an equilateral triangle if altitude $h = 6\, \text{in}$.	2
800	Find the incircle radius $ r $ of an equilateral triangle if side $a = 50\, \text{mm}$.	2