Arithmetic Aptitude :: Area
Each of the questions given below consists of a question followed by three statements. You have to study the question and the statements and decide which of the statement(s) is/are necessary to answer the question.
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What is the area of a right-angled triangle?
I.
The perimeter of the triangle is 30 cm.
II.
The ratio between the base and the height of the triangle is 5 : 12.
III.
The area of the triangle is equal to the area of a rectangle of length 10 cm.
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What is the area of rectangular field?
I. The perimeter of the field is 110 metres.
II. The length is 5 metres more than the width.
III. The ratio between length and width is 6 : 5 respectively.
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5x + 12x + 13x = 30 
x = 1.
l + b = 55.