Question

100 POINTS

Answer 1

Answer:

Given:

• Area of base of prism = 73.2 cm²
• Area of each lateral face = 104 cm²

Question 1

Total surface area = 2 x base area + 3 x lateral face area

                              = 2 x 73.2 + (3 x 104)

                              = 146.4 + 312

                              = 458.4 cm²

Question 2

Riley calculated the area by adding 2 base areas and only one lateral face.

       

Answer 2

Prism means two bases of equatorial triangle

So

Total area of bases

• 2(73.2)=146.4

Total Lateral surface area

• 3(104)
• 312

So

TSA:-

• 312+146.4
• 458.4cm²

Relly made error in LSA