A wooden article was made by scooping out a hemisphere from each end of a solid cylinder, as shown in the figure. If the height of the cylinder is 5.8 cm and its base is of radius 2.1 cm, find the tot

Question

A wooden article was made by scooping out a hemisphere from each end of a solid cylinder, as shown in the figure. If the height of the cylinder is 5.8 cm and its base is of radius 2.1 cm, find the total surface area of the article.

Accepted Answer

Step 1: CSA of cylinder $= 2 	imes \frac{22}{7} 	imes 2.1 	imes 5.8$
Step 2: $= 76.56$ cm$^2$
Step 3: CSA of two hemispheres $= 4 	imes \frac{22}{7} 	imes 2.1 	imes 2.1$
Step 4: $= 55.44$ cm$^2$
Step 5: Total Surface Area of article $= 76.56 + 55.44 = 132$ cm$^2$

Question

Solution