If a=5 and b=403 , then find the value of {1a2+1b2+2a+b(1a+1b)}⎡⎣{(a+b)2ab}−1⎤⎦ .

Give chapter 5 lines and angles own questions for board exams 

Find the following percentage value:

1) 15% of 250.

Find the angle which is equal to its supplement.

Find the breadth of the rectangle whose length is 70 cm and perimeter 200 cm.

Convert 1 gallon into liters.

a. 3.05 liters

b. 3.78 liters

c. 4.05 liters

d. 4.78 liters