Iift 2008 Question 48
This is a detailed step-by-step solution for Iift 2008 Question 48. Understand the concept, common mistakes, and expert tips to solve similar questions in IIFT exam.
IIFT 2008
Explanation:
The length of the spiral will be equal to the length of the circular arc portions of the semicircles.
Length of the circular arc portion of a semicircle = 22/7 x r.
Length of the spiral = 22/7 x (0.5 + 1 + 1.5 + 2 + …. + 6.5)
= 22/7 x 0.5 x (1 + 2 + 3 + …. + 13)
= 11/7 x 13 x 14 / 2
= 143 cm.
Therefore, option B is the right answer.
The length of the spiral will be equal to the length of the circular arc portions of the semicircles.
Length of the circular arc portion of a semicircle = 22/7 x r.
Length of the spiral = 22/7 x (0.5 + 1 + 1.5 + 2 + …. + 6.5)
= 22/7 x 0.5 x (1 + 2 + 3 + …. + 13)
= 11/7 x 13 x 14 / 2
= 143 cm.
Therefore, option B is the right answer.
The length of the spiral will be equal to the length of the circular arc portions of the semicircles.
Length of the circular arc portion of a semicircle = 22/7 x r.
Length of the spiral = 22/7 x (0.5 + 1 + 1.5 + 2 + …. + 6.5)
= 22/7 x 0.5 x (1 + 2 + 3 + …. + 13)
= 11/7 x 13 x 14 / 2
= 143 cm.
Therefore, option B is the right answer.