a wooden toy rocket in the shape of a cone mounted on a cylinder. the height of the entire rocket is 26 cm while the height of the. conical part is 6cm. the base of the conical portion has a diameter of 5 cm while the base diameter of the cylindrical portion is 3cm
Answers
Answer:
Area to be painted orange = Curved surface area of the cone + Base area of the cone − Base area of the cylinder
Area to be painted yellow = Curved surface area of the cylinder + Area of one bottom base of the cylinder
Curved surface area of cone =πrl
l=62+2.52
l=36+6.25
l=42.25
l=6.5 cm
Curved surface area of cone =3.14×2.5×6.5
=51.025 cm2
Base area of cone = Area of circle
=πr2
=3.14×(2.5)2
=3.14×6.25
=19.625 cm2
Curved surface area of cylinder =2πrh
=2×3.14×1.5×20
=188.4 cm2
Base area of cone = Area of circle
=πr2
=3.14×(1.5)2
=7.065 cm2
Area to be painted orange = Curved surface area of the cone + Base area of the cone − Base area of the cylinder
=51.025+19.625−7.0625
=63.59 cm2
Area to be painted yellow = Curved surface area of the cylinder + Area of one bottom base of the cylinder
=188
this is your answere