Question

Please send me all maths formulas in class 5 to 12

Answer 1

Triangle=1/2×base ×height
Equilateral triangle= 3/4a* under the root
in 9 class herons formula for triangle =s(s-a)(s-b)(s-c) under the root
in 10class formula for triangle=1/2×x1(y2-y3)×x2(y3-y1)×x3(y1-y2)