Consider the series 1/4 1/16 1/64 1/256

On a cm grid, point p has coordinates (3,-1) and point q has coordinates (-5,6) calculate the shortest distance between p and q give your answer to 1 decimal place

Bob the builder is making 480kg of cement mix. this is made by cement, sand and gravel in the ratio 1: 3: 4

Geometry - finding area of regular polygons and sectors (check my math, i can’t find the error)