5. Calculate the total surface areas of cuboids with the following 3 dimensions. Cuboid 1st dimension 2nd dimension 3rd dimension Surface area A B C D E F
6cm 9cm
12cm 15cm 11cm 22cm
4cm 7cm 8cm 5cm
18cm 14cm
3cm 5cm 2cm 6cm 8cm 4cm
Homework
1. Work out the area of these rectangles. Remember to record the correct unit of measurement in your answer (cm2
or m2 Rectangle 1
Length – 23cm Width – 17cm Area – ?
Rectangle 4
Length – 13.8m Width – 6.4m Area – ?
). Rectangle 2
Length – 37cm Width – 26cm Area – ?
Rectangle 5
Length – 12.9cm Width – 8.6cm Area – ?
2. Now fi nd the missing dimension of each of these fi elds. Field 1