Question

A toy is made by mounting a cone on a hemisphere is 5cm The total height of a toy is 17cm Find the Total surface area of a toy

Answer 1

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Answer 2

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Total Surface Area of Toy= Curved suarearface area of Hemisphere + Curved Surface of Cone

$\huge \boxed {\textt \fcolorbox \fcolorbox \ {HEMISPHERE}}}$

Curved Surface area of Hemisphere= $\ 2π{r}^{2}$

= 2× 22/7 × 5×5= 1100/7

$\huge \boxed {\textt \fcolorbox \fcolorbox \ {CONE}}}$

r= 5cm

h= 17-5=12

$\huge l= \sqrt{({h}^{2}) +({r}^{2})} \\ l = 13}}$

Curved Surface Area of Cone =πrl =22/7 × 5×13
= 1430/7

SA of Toy = 1100/7 +1430/7 = 2530/7 = 361.42sqcm

$\huge \boxed {\textt \fcolorbox \boxed \fcolorbox \ {TSA of Toy =361.42 sqcm}}}$

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