Ex 12.1, 3 See the figure and find the ratio of (a) Number of triangles to the number of circles inside the rectangle. Number of triangles = 3
Number of circles = 2
∴ Ratio = (𝑁𝑢𝑚𝑏𝑒𝑟 𝑜𝑓 𝑡𝑟𝑖𝑎𝑛𝑔𝑙𝑒𝑠)/(𝑁𝑢𝑚𝑏𝑒𝑟 𝑜𝑓 𝑐𝑖𝑟𝑐𝑙𝑒𝑠)
= 3/2
∴ Ratio is 3 : 2
Ex 12.1, 3 See the figure and find the ratio of (b) Number of squares to all the figures inside the rectangle.Number of squares = 2
Number of figures inside rectangle = 7
∴ Ratio = (𝑁𝑢𝑚𝑏𝑒𝑟 𝑜𝑓 𝑠𝑞𝑢𝑎𝑟𝑒𝑠)/(𝑁𝑢𝑚𝑏𝑒𝑟 𝑜𝑓 𝑓𝑖𝑔𝑢𝑟𝑒𝑠)
= 2/7
∴ Ratio is 2 : 7
Ex 12.1, 3 See the figure and find the ratio of (c) Number of circles to all the figures inside the rectangle.Number of circles = 2
Number of figures = 7
∴ Ratio = (𝑁𝑢𝑚𝑏𝑒𝑟 𝑜𝑓 𝑐𝑖𝑟𝑐𝑙𝑒)/(𝑁𝑢𝑚𝑏𝑒𝑟 𝑜𝑓 𝑓𝑖𝑔𝑢𝑟𝑒𝑠)
= 2/7
∴ Ratio is 2 : 7

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.

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