Hello, Tom!

You left out a fact: .The total surface area is 240 cm².7. The dimensions of a cuboid are: (length), (width), (height).

The Volume of the cubiod is 200 cm³ and its length is twice its width.

a) Write down 3 equations involving .

The equations would be:

. . . . . . . . . . .

. . . . . . . . . .

. .

That equation is wrong . . . Please check the original problem.8. £1,000 is invested in a bank account on 1st Jan 1994.

A further £1,000 is invested at the start of each year.

The final pament was on 1st Jan 2003.

When the account was closed on 1st Jan 2004 it was worth £15,000.

a) Annual interest rate is p% and

Show that: .

. . . . . . . . . . . . . . . . . .?