Question

please help me in this questions , in this points i need to choose the correct answer and please is necessary the procedure

Answer 1

Answer:

36.b

37.b

38.c

39.d

Step-by-step explanation:

36. it is a theory

37. using herons formula√s(s-a)(s-b)(s-c) where s is semiperimeter and a,b,c are the sides semi perimeter = a+b+c/2

38.we can find the area by herons formula as we know all the sides, then we can use the area and put it in the formula 0.5*base*height=area, then we find height by substituting the base and the 2 on the rhs.

39. drop a perpendicular on the base of the equilateral triangle. that divides the base it becomes a/2. now the hypotenuse is a and base is a/2 then use pythagoras

h²+a/2²=a²