This isosceles triangle has two sides of equal length, a, that are longer than the length of the base, b. the perimeter of the triangle is 15.7 centimeters. the equation 2a + b = 15.7 models this information. if one of the longer sides is 6.3 centimeters, which equation can be used to find the length of the base?

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 %

8litres of paint can cover 129.6 m². how much paint is required to paint an area of 243m²?

Can someone show me step by step how to do this?