Question : The sides of a rhombus are 10 cm each and the diagonal measures 16 cm. The area of the rhombus is:

Option 1: 96 sq. cm

Option 2: 160 sq. cm

Option 3: 100 sq. cm

Option 4: 40 sq. cm

Question : The three sides of a triangle are 7 cm, 9 cm, and 8 cm. What is the area of the triangle?

Option 1: $12 \sqrt{3} \;\mathrm{Sq} . \mathrm{cm}$

Option 2: $10\sqrt{3} \;\mathrm{Sq} . \mathrm{cm}$

Option 3: $12 \sqrt{5} \;\mathrm{Sq} . \mathrm{cm}$

Option 4: $2 \sqrt{5} \;\mathrm{Sq} . \mathrm{cm}$

Question : The area of 4 walls of a cuboid is 400 sq. cm. Its length is 15 cm and its height is 8 cm. What is its breadth (in cm)?

Option 1: 12

Option 2: 20

Option 3: 24

Option 4: 10

Question : The length of the diagonals of a rhombus is 40 cm and 60 cm. What is the length of the side of the rhombus?

Option 1: $50 \sqrt{3} \ \text{cm}$

Option 2: $20 \sqrt{3}\ \text{cm}$

Option 3: $10 \sqrt{13}\ \text{cm}$

Option 4: $40 \sqrt{13}\ \text{cm}$

Question : The area and the length of one of the diagonals of a rhombus are 84 cm² and 7 cm respectively. Find the length of its other diagonal (in cm).

Option 1: 12

Option 2: 24

Option 3: 48

Option 4: 36