Given:
LMN is an equilateral triangle.
LM = LN = MN = 12 cm
To find:
The height of the triangle h.
Solution:
In a right angle triangle,



Multiply both sides by 12.


Therefore, the height of the triangle is
cm.
Answer:
2
Step-by-step explanation:
Answer: Area of rectangle can be given by expressions:

Step-by-step explanation:
Given : A square has sides of length s.
According to the question,
Dimensions of new rectangles=(s-6)×(s+1)
Thus, Area of rectangle= (s-6)×(s+1)

Thus , area of rectangle can be given by expressions:

Answer:9
Step-by-step explanation:
Square root of 81 is9.
Answer:
In 29 1/2 days, the total pipe laid is
mile.
Step-by-step explanation:
The length of pipe laid in 1 day = 1/8 mile
So, the length of pipe laid in half day = half of (1/8 mile)
= 
Now, 29 1/2 days on simplification means 29 and half day.
So, length of pipe in 29 days =
mile
Now adding the length laid in half day = 
So, in 29 1/2 days, the total pipe laid is
mile.