Question : The base of a triangle is equal to the perimeter of a square whose diagonal is $9 \sqrt{2}$ cm and its height is equal to the side of a square whose area is 144 cm². The area of the triangle(in cm²) is:
Option 1: 216
Option 2: 72
Option 3: 144
Option 4: 288

Question

Question : The base of a triangle is equal to the perimeter of a square whose diagonal is $9 \sqrt{2}$ cm and its height is equal to the side of a square whose area is 144 cm². The area of the triangle(in cm²) is:

Option 1: 216

Option 2: 72

Option 3: 144

Option 4: 288

Team Careers360 · Accepted Answer

Correct Answer: 216

Solution : Diagonal of square = $9 \sqrt{2}$ cm
Now, $\sqrt 2$ × side of square = $9 \sqrt{2}$
⇒ Side of square = 9 cm
So, the perimeter of square = 4 × 9 = 36 cm
Base of triangle, $b$ = 36 cm
Area of square = 144 cm²
Also, the side of square = $\sqrt{144}$ = 12 cm
Height of the triangle, $h$ = 12 cm
Now, the area of triangle = $\frac{1}{2}×b×h$
= $\frac{1}{2} × 12 × 36$
= 216 cm²
Hence, the correct answer is 216.

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Question : The base of a triangle is equal to the perimeter of a square whose diagonal is 92 cm and its height is equal to the side of a square whose area is 144 cm2. The area of the triangle(in cm2) is:Option 1: 216Option 2: 72Option 3: 144Option 4: 288

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Question : The base of a triangle is equal to the perimeter of a square whose diagonal is $9 \sqrt{2}$ cm and its height is equal to the side of a square whose area is 144 cm². The area of the triangle(in cm²) is:
Option 1: 216
Option 2: 72
Option 3: 144
Option 4: 288