Question

Answers are there but i need the work
the rectangular prism below has a total surface area of 198 in^2 use the net below to determine the missing dimension x

a net of a building block is shown below what is the total surface area of the building block

Answer 1

Answer:

8.25in

Step-by-step explanation:

6×4=24in

198÷24=8.25in

hence the answer is 8.25in

Answer 2

Answer:

See below ~

Step-by-step explanation:

#7)

• Area of a rectangle = l x b

• 30 in² = 4 in (x in)
• x = 30/4 = 7.5 inches

#8)

• Total Surface Area = 2 x Area (Triangle) + Area (Rectangle 1) + Area (Rectangle 2) + Area (Rectangle 3)
• TSA = 2 x 1/2 x 3 x 4 + 9 x 5 + 4 x 9 + 3 x 9
• TSA = 12 + 45 + 36 + 27
• TSA = 57 + 63
• TSA = 120 in²