What is the area and uncertainty in area of one side of a rectangular plastic brick that has a length of (21.4 ± 0.2) cm and a width of (9.8 ± 0.1) cm? (Give your answers in cm2.) WebAssign will check your answer for the correct number of significant figures. ± WebAssign will check your answer for the correct number of significant figures. cm2 (b) What If? If the thickness of the brick is (1.1 ± 0.2) cm, what is the volume of the brick and the uncertainty in this volume? (Give your answers in cm3.) WebAssign will check your answer for the correct number of significant figures. ± WebAssign will check your answer for the correct number of significant figures. cm3