CBSE Class 6 Answered
NASA contracted for the development of Space Shuttle in
1972. After 4.5 yrs, the project was halfway completed when the Enterprise began flight tests. The segment below represents the length of time between the beginning of development and the first launch. Determine the year Columbia was launched.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
Point E is the mid-point
of
. Thus, the length of
must be two times the length
of
.
=2
= 2(4.5)
= 9
The length of
is 9 yrs.
The launch of Columbia took place in (1972 + 9 yrs) = 1981
Answered by | 04 Jun, 2014, 03:23: PM
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