If the sides of an equilateral triangle is decreased by 20%, its area is decreased by
(a)
36%
(b)
40%
(c)
60%
(d)
64%
If the sides of an equilateral triangle is decreased by 20%, its area is decreased by
(a)
36%
(b)
40%
(c)
60%
(d)
64%
Question ID - 50131 | SaraNextGen Answer
If the sides of an equilateral triangle is decreased by 20%, its area is decreased by
(a)
36%
(b)
40%
(c)
60%
(d)
64%
|
If the sides of an equilateral triangle is decreased by 20%, its area is decreased by |
|||||||
|
(a) |
36% |
(b) |
40% |
(c) |
60% |
(d) |
64% |
1 Answer - 5876 Votes
3537
Answer Key : (a) -
Answer LinkLet the sides be 
and 80% of 
= 
Initial area = 
Final area =
.
Decrease in area = 
Decrease % = 
