Question a
The given cube has length,
![l = 5cm](https://img.qammunity.org/2020/formulas/mathematics/high-school/wwrntzfs2os9w23enoo6y2ekhu3erpummh.png)
If the cube us enlarged by a scale factor of 2, then the enlarged cube has length,
![L=2 * 5cm = 10cm](https://img.qammunity.org/2020/formulas/mathematics/middle-school/3t1ysklualmj2iivjjquhpb6ygiqdr77bw.png)
Question b.
The volume of the original cube is
![v = {5}^(3) = 125 {cm}^(3)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/v35qh79ioiqfze9p3y1g95u3ikor6b32ob.png)
To find the volume of the enlarged cube, multiply the volume of the original cube by 2³.
The volume of the enlarged cube is
![V = {2}^(3) * 125 = 1000 {cm}^(3)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/528m7lz8f1o2uzdxe7a0fja4a06bxm12px.png)
Question C
The surface area of the original cube is
![s.a = 6 {l}^(2)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/53sfhdngc1e36q0m3wmmbdcdzly0tbrwnw.png)
![s.a = 6 * {5}^(2) = 150 {cm}^(2)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/neuvogchf18xijbv8t1mru2jntcsmh8ubn.png)
To find the surface area of the enlarged cube multiply the surface area of the original cube by 2².
![S. A = {2}^(2) * 150 = 600 {cm}^(2)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/kqi9mgw1rr8qqczdk72vaayg8rn9d1b235.png)