A pentagonal pyramid $($side of base $=50mm$ and height $=100mm)$ is resting on its base on the ground with axis parallel to the frontal plane and perpendicular to the horizontal plane. One of the sides of the base is parallel to the frontal plane. A vertical section plane cuts the pyramid at a distance of $15mm$ from the axis. The section plane makes an angle of $45$ with FP$.$ Draw the sectional plan, sectional elevation, sectional side view and the isometric view of the major remaining portion of the pyramid. $(16)$