Use this formula to find the number of circles in Step 15. Class 8
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Expert Answer
Use this formula to find the number of circles in Step 15. Class 8
Question 1.
Use this formula to find the number of circles in Step 15. Class 8
Solution:
Number of circles
= k² + 2k
= 15² + 2 × 15
= 225 + 30 + 255
Question 2.
Consider the pattern made of square tiles in the picture below. Class 8
Note : Do as directed.
How many square tiles are there in each figure?
Solution:
Ist figure 8, second figure 12, third figure 16.
Question 3.
How many are there in Step 4 of the sequence? What about Step 10? Class 8
Solution:
Step 4 = 8 + 3 × 4 = 20
Step 10 = 8 + 9 × 4 = 44.