Here is a rectangle ABCD BC is 20cm
DC is 30cm
The length of the rectangle is increased by 10%
The width of the rectangle is increased by 5%
Find the percentage increase in the perimeter of the rectangle

The edge of a cube was found to be 30 cm with a possible error in measurement of 0.4 cm. use differentials to estimate the maximum possible error, relative error, and percentage error in computing the volume of the cube and the surface area of the cube. (round your answers to four decimal places.) (a) the volume of the cube maximum possible error cm3 relative error percentage error % (b) the surface area of the cube maximum possible error cm2 relative error percentage error %