If we increase the side of a cube the volume increases
If we increase the side of a cube by 4 m, the volume increases by 208 m^3 . Which of these is the side of the cube?
The area of the quadrilateral
ABCD is a square of side 3, and E and F are the mid points of sides AB and BC respectively. What is the area of the quadrilateral EBFD?
The length of arc AB
If the radius of the circle with center O is 7 and the measure of angle AOB is 100, what is the best approximation to the length of arc AB?
The-perimeter-of-the-parallelogram
ABCD is a parallelogram. BD = 2. The angles of triangle BCD are all equal. What is the perimeter of the parallelogram?
The area of triangle
In triangle ABC, AD = DB , DE is parallel to BC, and the area of triangle ABC is 40. What is the area of triangle ADE?
Distance of the foot of the ladder from the building
A ladder 25m long reaches a window of a building 20m above the ground. Determine the distance of the foot of the ladder from the building.
The length of the ladder
A ladder is placed in such a way that its foot is at a distance of 5m from a wall and its tip reaches a window 12m above the ground. Determine the length of the ladder.
The measure of each angle of a rhombus
An obtuse angle of a rhombus is greater than twice the acute angle by 60°. Find the measure of each angle.
