Another thrifty student has saved up $1400 working at City Beach. This person put the money into an account for 1 year, which generated $70 interest. What was the interest rate?

how do i work out the interest rate?

Ican figure out 20 shares multiply by $117.98 =2359.6920 shares multiply by $124.32=2486.40then take 40 shares multiply by $128.48=5139.20after that i'm lost any be greatly appreciated.

Aswimming pool is a rectangle with semicircles on the end. the rectangle is 12 meters wide and 30 meters long. the diameter and width of the swimming pool are equal. sketch and label an overhead diagram of the swimming pool. find the area of the swimming pool floor.

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r