Question

If the altitude of a right prism is 10 cm and its base is an equilateral triangle of side 12 cm,then the total surface area is-

Answer 1

required answer is 25

Answer 2

Answer:

$484.707 cm^2$

Step-by-step explanation:

Given : The altitude of a right prism is 10 cm and its base is an equilateral triangle of side 12 cm

To Find :Total surface area

Solution :

Height of prism = 10 cm

Side of base = 12 cm

Total surface area of prism = $Perimeter \times Height + 2 \times \text{Base Area}$

Total surface area of prism = $3 \times 12\times 10 + 2 \times \frac{\sqrt{3}}{4}(12)^2$

Total surface area of prism = $484.707 cm^2$

Hence  the total surface area is  $484.707 cm^2$