The volume of the triangular prism is 120 cm3 The base length of the

1.	The volume of the triangular prism is 120 cm3 The base length of the isosceles triangle is 8 centimetres The height of the triangle is 3 centimetres The side edge of the cross section of triangular prism is 5 centimetres. What is the surface area?
Answer» ong>Answer: VOLUME of right ISOCELES prism = 1000 cm^3 Length = 20 cm. Area of one right triangular side = 1000/20 = 50 cm^2 1/2×a^2 = 50 => a^2 = 100 => a = 10 cm. Base or hypotenuse of right triagular SIDES => √(100 + 100) = 10√2 Lateral surface area => (10 + 10 + 10√2)×20 = 682.84 cm^2. Total surface area => 782.84 cm^2.

The volume of the triangular prism is 120 cm3 The base length of the isosceles triangle is 8 centimetres The height of the triangle is 3 centimetres The side edge of the cross section of triangular prism is 5 centimetres. What is the surface area?

Answer»

ong>Answer:

VOLUME of right ISOCELES prism = 1000 cm^3

Length = 20 cm.

Area of one right triangular side = 1000/20 = 50 cm^2

1/2×a^2 = 50 => a^2 = 100 => a = 10 cm.

Base or hypotenuse of right triagular SIDES =>

√(100 + 100) = 10√2

Lateral surface area =>

(10 + 10 + 10√2)×20 = 682.84 cm^2.

Total surface area => 782.84 cm^2.

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The volume of the triangular prism is 120 cm3 The base length of the isosceles triangle is 8 centimetres The height of the triangle is 3 centimetres The side edge of the cross section of triangular prism is 5 centimetres. What is the surface area?

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