Question : The total surface area of a hemisphere is 41.58 sq. cm. Find its curved surface area.

Option 1: 27.72 sq. cm.

Option 2: 55.44 sq. cm.

Option 3: 9.24 sq. cm.

Option 4: 13.86 sq. cm.

Question : The base of a right prism is an equilateral triangle whose side is 10 cm. If the height of this prism is $10 \sqrt{3}$ cm, then what is the total surface area of the prism?

Option 1: $125 \sqrt{3}$ cm²

Option 2: $325 \sqrt{3}$ cm²

Option 3: $150 \sqrt{3}$ cm²

Option 4: $350 \sqrt{3}$ cm²

Question : The base of a right prism is a triangle whose sides are 8 cm, 15 cm and 17 cm, and its lateral surface area is 480 cm$^2$. What is the volume (in cm$^3$) of the prism?

Option 1: 540

Option 2: 600

Option 3: 720

Option 4: 640

Question : The base of a prism is a right-angle triangle whose sides are 9 cm, 12 cm, and 15 cm. Volume of this prism is 648 cm³. What will be the height of the prism?

Option 1: 14 cm

Option 2: 12 cm

Option 3: 9 cm

Option 4: 16 cm

Question : The base of a solid right prism of height 10 cm is a square and its volume is 160 cm³. What is the total surface area of the prism (in cm²)?

Option 1: 200

Option 2: 176

Option 3: 192

Option 4: 180