1 Answer

Prithniraj Nicyone · Answer 1 · 2022-09-22T07:35:45+0000

Answer:

Area = 9(7w -1) cm²

Explanation:

Area of a triangle is given by the expression,

Area =
$(1)/(2)(\text{Base})(\text{height})$

From the picture attached,

Base of the triangle = 18 cm

Height of the triangle = Vertical distance of the third vertex from the base joining other two vertices = (7w - 1)

Area =
(1)/(2)(18)(7w-1)

= 9(7w - 1) square cm

Therefore, expression for the area of the given triangle will be,

Area = 9(7w -1) cm²

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