state gov DDA Junior Secretariat Assistant (JSA) Mock Test 2023 Quantitative Aptitude Mensuration Plane Figures
A square piece of paper is folded three times along its diagonal to get an isosceles triangle whose equal sides are 10 cm. What is the area of the unfolded original piece of paper?
1
400 sq.cm.
2
800 sq.cm.
3
800√2 sq.cm.
4
1600 sq.cm.