Question

What are the following surface areas

Answer 1

Answer:

Answer 3: $188.571cm^{2}$

Answer 4: $471.428cm^{2}$

Step-by-step explanation:

Answer 3:

It is Cylinder in shape having dimensions

Height(h)=10m

radius(r)=3m

Surface area of Cylinder is 2πrh

⇒$2(\frac{22}{7} )(10)(3)$

⇒$(\frac{44}{7} )(30)$

⇒$\frac{1320}{7}$

⇒$188.571$

The Surface area of Cylinder is $188.571cm^{2}$.

Answer 4:

It is Cylinder in shape having dimensions

Height(h)=15in

radius(r)=5in

Surface area of Cylinder is 2πrh

⇒$2(\frac{22}{7})(15)(5)$

⇒$(\frac{44}{7})(75)$

⇒$\frac{3,300}{7\\}$

⇒$471.428$

The Surface area of Cylinder is $471.428cm^{2}$.