In the diagram above, PXR and PYO are two semicircles with diameters 14cm and 7cm respectively. Find the perimeter of the region (take \(\pi\) = \(\frac{22}{7}\) )

A cylindrical pipe 50m long with radius 7m has one end open. What is the total surface area of the pipe?

Find the length of a side of a rhombus whose diagonals are 6cm and 8cm

The ratio of the length of two similar rectangular blocks is 2 : 3. If the volume of the larger block is 351cm\(^3\), then the volume of the other block is?

In the parallelogram PQRS, PE is perpendicular to QR. Find the area of the parallelogram.