Question

What is the surface area of the solid that this net can form?8 mm25 mm8 mm5 mm5 mm8 mm8 mm5 mm5 mm8 mm8 mm25 mmO 730 square millimetersO 875 square millimeters0 1,000 square millimetersO 1,444 square millimeters

Answer 1

The solid is formed by 6 rectangles.

Calculate the area of each one and then add them to obtain the surface area (SA),

Area of a rectangle: Length x width

A1 = 8 x 5 = 40 mm2

A2= 25x5 = 125 mm2

A3 = 8 x 5= 40 mm2

A4 = 25 x 8 = 200 mm2

A5 = 25x5 = 125 mm2

A6 = 25 x 8 = 200mm2

SA = A1+A2+A3+A4+A5+A6 = 40 + 125 +40 +200 +125+ 200 = 730 mm2