Question

a toy is in the Shape of a cone is attached
base face of a hemisphere. The
Common radius 3 and total heights is
7cm calcolate the surface area of the toy​

Answer 1

Answer:

134.61 (answer can vary depending upon approximation)

Step-by-step explanation:

radius of hemisphere = 3 (unit is not given but u can add at the final answer)

surface area of toy

surface area of (hemisphere without base plate) + surface area of cone without base plate

TSA if hemi-sphere = 3πr2

without base plate = 2πr2

(2 * 22/7 * 3 * 3 ) / 7

= 396/7

= 56.57..

approx = 56.57

length of cone = sq root(height^2 + radius^2)

= sq root (58)

approx = 8.28

curve surface area of cone = πrl

= 22/7 * 3 * 8.28

= 78.04

total surface area  = csa of hemisphere + csa of cone

= 56.57 + 78.04

= 134.61

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