Question : There are three measuring tapes which measure 56 cm, 64 cm, and 80 cm in length. Find the least length that could be measured by using any of the three tapes. (Only one type of tape should be used at a time and only complete tape should be used to measure.)

Option 1: 2240 cm

Option 2: 1982 cm

Option 3: 1706 cm

Option 4: 1876 cm

Question : The length, breadth, and height of a cuboid are 4 cm, 6 cm, and 10 cm respectively. Find the total surface area.

Option 1: $248\ \text{cm}^2$

Option 2: $244\ \text{cm}^2$

Option 3: $144\ \text{cm}^2$

Option 4: $222\ \text{cm}^2$

Question : The length of each side of a rhombus is 10 cm. If the length of one of its diagonals is 16 cm, then what is the area of the rhombus?

Option 1: 108 cm²

Option 2: 112 cm²

Option 3: 128 cm²

Option 4: 96 cm²

Question : The perimeter of an equilateral triangle is 40 cm more than the length of each of its sides. What is the length of each side of this equilateral triangle?

Option 1: 10 cm

Option 2: 30 cm

Option 3: 15 cm

Option 4: 20 cm

Question : The mean height of 30 students was given as 140 cm. It was later observed that one of the observations was incorrectly copied as 121 cm while it was 134 cm. What was the correct mean height? [Give your answer correct to one place of decimal.]

Option 1: 150.4 cm

Option 2: 140.4 cm

Option 3: 160.4 cm

Option 4: 130.4 cm