height of dius is 30 cm. Find the 22 the bird-bath. (Take it = ) 7 cm 11.450 eight of the cylinder, and r the ylinder and hemisphere. Then, Fig. 13,9 f the bird-bath = CSA of cylinder + CSA of hemispher = 2ītrh + 2tr2 = 2tr(h + r) r 22 = 2 x= x 30(145 7
Answers
Let r be the common radius of the cylinder and hemisphere and h be the height of the hollow cylinder.
Then r=30cm;h=1.45m=145cm
Total surface are of the bird-bath = curved surface area of the cylinder + curved surface area of the hemisphere
=2πrh+2πr
2
=2π(h+r)
=2×
7
22
×30(145+30)cm
2
=3.3m
2
Answer:
Let r be the common radius of the cylinder and hemisphere and h be the height of the hollow cylinder.
Then r=30cm;h=1.45m=145cm
Total surface are of the bird-bath = curved surface area of the cylinder + curved surface area of the hemisphere
=2πrh+2πr
2
=2π(h+r)
=2×
7
22
×30(145+30)cm
2
=3.3m
2
Step-by-step explanation:
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