What is the balance for £4500 invested for 2 years at 4% per annum

I=prt
I=interest paid
P= principal
R= interest rate
T= time
I=4500*0.04*2
=360
So the ending balance=4500+360=4860

Volume is length times width times height so
20 times 8 times 30 which is 4,800
surface area is ph (p is perimeter of base), h is height.
so perimeter would be length+length+width+width so 20+20+8+8 which is 56. so multiply 56 times 30 which is 1680. hope this !