Question

d
1. cylindrical waden article Awooden article was made by ouping out hemisphere from
one end of a cylinder and one from the other end as shown in the figure the height of
the cylinder is 40 cm radius of the cylinder is 7 cm and height of the coneix 24 cm
6
V
Find the slant height of the cone.
24 cm
26 cm
25 cm
27 cm
Find the volume of hemisphere
718.67cm
b. 720.5cm
721.6cm
d. None of these
Find the volume of cone
1232cm
b
2234cm
4210.5cm
None of these
iv. Find curved surface area of cone
580cm
b. 575cm
555cm
d. 550cm
​

Answer 1

Answer:

Step-by-step explanation:

Lateral height of cone = \sqrt{7^2 + 24^2 } =25cm

Surface Area of Article = CSA of Cylinder + CSA of Cone + CSA of Cone

= 2\pi (7)(40)+ \pi (7)(25) + 2 \pi (7)^2

=2618 sq cm

Volume of article = Volume of cylinder - [Volume of cone + volume of hemisphere]

= \pi (7)^2 (40) - [ (1/3) \pi (7)^2 (24) + (2/3) \pi (7)^3 ]

= 12628/3 cubic cm