state gov DSSSB Junior Assistant, Steno and LDC Mock Test 2023 - 24 Quantitative Aptitude Mensuration Plane Figures
A line segment of 0.5 cm was cut from each corner of a square of side 3 cm, the cut has a vertex. What are the perimeter and the area (respectively) of the octagon so formed?
1
\(\rm10\sqrt2\space cm\) and 8 cm2
2
8 cm and 8 cm2
3
\(\rm8\sqrt{2}\space cm\) and 8 cm2
4
\(\rm (8 + 2\sqrt{2})\space cm\) and 8.5 cm2