Question

The base of an isosceles right triangle is 30cm. its area is
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Answer 1

Answer:

450cm2

Given that △ABC is an isosceles right triangle.

Since the base BC=30 cm, therefore, AB=30 cm.

Area of △ABC:

A=21×AB×BC=21×30×30=450 cm2

Hence, area of △ABC is 450 cm2.

Answer 2

Answer:the three angles of the triangles = 45 , 45 , 90 in triangle abc so, ac which is the base = bc which is the height , then the area of triangle = 1/2 × base × height = 1/2 × 30 × 30 = 15 × 30 = 450 cm^2

Step-by-step explanation: