The area of a parallelogram is found by multiplying its base by its corresponding height.
The formula for the area (\(A\)) of a parallelogram is:
\(A = b \times h\)
Where:
\(A = 5\text{ cm} \times 6\text{ cm}\)
\(A = 30\text{ cm}^2\)
The area of the parallelogram is \(30\text{ cm}^2\). This matches Option A.
The inner and outer diameters of ring 1 of a dartboard are 15 cm and 17 cm respectively and those of ring II are 12 cm and 13 cm respectively. What is the total area of these two rings?

\(ABCD\) is a diameter of a circle of radius 12 cm. The lengths \(AB\), \(BC\) and \(CD\) are equal. Semi-circles are drawn on \(AB\) and \(BD\) as diameters as shown in the given figure. Find area of the shaded region.
The shorter side of a rectangle is 15 cm less than the longer side. The numerical value of its area is equal to 5 times the numerical value of its perimeter. What is the length (in cm) of its longer side?