The length of an edge of a cube is l. Find the formula for the sum of lengths of all the edges of the cube.

Find the following percentage value:

1) 15% of 250.

Find the perimeter of the given figure

Find the perimeter of the given figure

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