NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 6: Triangles - Multiple Choice QuestionsQuestion 16
Class 7 - Mathematics - Unit 6: Triangles - Multiple Choice Questions
Question. 16
The perimeter of the rectangle whose length is 60 cm and a diagonal is 61 cm is
(a)
(a) 120 cm
(b)
(b) 122 cm
(c)
(c) 71 cm
(d)
(d) 142 cm
Detailed Answer with Explanation:
Breadth = \(\sqrt{61^2 - 60^2} = 11\). Perimeter = 2(60+11) = 142 cm.