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This is not an equilateral triangle if height is 4 m the base is 6 m and by Pythagorean theorem the other sides are 5 m perimeter is 6 + 5 + 5 = 16m Area = base x height = 6 x 4 = 24 sq m
(- 2, - 4) and (- 7, - 1)First the slope is needed.m = Y2 - Y1/X2 - X1m = - 1 - (- 4)/- 7 - (- 2)m = - 3/5==========now, point slope form, use these points (- 2, - 4)Y - Y1 = m(X - X1)Y - (- 4) = -3/5[X - (- 2)]Y + 4 = - 3/5(X + 2)Y + 4 = (- 3/5)X - 6/5Y = (- 3/5)X - 26/5===============equation of the line
Square has 4 sides, so 4 x 1.25 = 5 m
The perimeter of a rectangle is twice the length plus twice the width so half the perimeter is the length plus the width. If the perimeter is 12 m, then the length plus the width must equal 6. The dimensions could therefore be 1 m x 5 m, 2 m x 4 m, 3 m x 3 m (although this would be a square), 4 m x 2 m or 5 m x 1 m.
5 x 16 + 4 x 9 = 80 + 36 = 116