Question

A line of length 12 inches is parallel to vertical plane and 5 inches away from it and ends of it is 3, 4 inches away from the profile plane. The length of line in top view will be __________

(a) 11.61 inches

(b) 11.31 inches

(c) 11.95 inches

(d) 30.37 inches

I have been asked this question in unit test.

My doubt stems from Projection of Line Inclined to one Plane and Parallel to other topic in portion Projection of Lines of Engineering Drawing

Answer 1

Correct answer is (c) 11.95 inches

For explanation: Given a line of length 12 inches and parallel to vertical plane and it may be any inches away from it the top view is calculated as given here √(12^2-1^2 )= 11.95 inches. 1 is because of 4-3 inches = 1 inch.