Q. 305.0( 3 Votes )

A toy is in the s

Answer :

Radius= Diameter/2 =40/2
Radius=20cm

Height of cylinder=21cm


Height of cone=15cm


Slant height of cone,l=√ h2 + r2


l=√ (15)2 + (20)2


l=√ 225 + 400=√ 625


l=25cm


Total surface area of toy= Curved surface area of cone
+ Curved Surface area of cylinder
+ Area of bottom part


Total surface area=πrl + 2πrhcyl + πr2


=3.14[20 × 25 + 2 × 20 × 21 + 20 × 20]


=3.14[1740]=5463.6cm2


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