If the area of the triangle shown above is 12 squares inches, what is the value of cosz?

ABCD is a quadrillateral, with AD parallel to BC (see figure). E is a point between A and D such that BE represents the height of ABCD and E is the midpoint of AD. If the area of triangle ABE is 12.5 square inches, what is the area of ABCD?

If the figure above is a square, what is the value of a?

Nine playing cards are set up to form a rectangle as shown in the adjoining figure, If the area of the rectangle so formed is 180 square inches, what is its perimeter? (FIGURE) (a) 48 inches (b) 56 inches (c) 58 inches (d) 60 inches

In the figure given above, ABCD is a parallelogram. P is a point on BC such that PB : PC = 1 : 2. DP produced meets AB produced at Q. If the area of the triangle BPQ is 20 square units, what is the area of the triangle DCP?

In the figure above, quadrilateral ABED, BFGC, and ACHJ are square. If the area of equilateral triangleABC is 16sqrt(3) square inches, what is the number of inches in the perimeter of polygon ADEBFGCHJA?

If the area of the triangle above is 6, what is its perimeter?

If x=3, what is the area of the triangle above?

The figure above shows a regular hexagon with sides of length a and a square with sides of length a. If the area of the hexagon is 384 sqrt(3) square inches, what is the area, in square inches, of the square?

What is the area of the triangle shown in the given triangle?

In the figure the area of triangle APB is 25 square centimetres. What is the area of triangle ABC ? What is the area of rectangle ABCD?