A wooden block has a height of 7/2 inches . What will be it's new height if 1/4 inch is removed from the top
Answers
Answered by
11
The new hight will be = 7/2 - 1/4 inch
= 3.25 inch
or , 13/4 inch
Answered by
2
Answer:
r = radius of hemisphere and cone = 3.5 cm ; h = height of cone
Volume, V
total
=V
cone
+V
hemisphere
=
3
1
πr
2
h+
3
2
πr
3
=166.83cm
3
⇒πr
2
(h+2r)=500.5cm
3
⇒h+2(3.5)=
π×3.5
2
500.5
Hence h=13−7=6cm
Height of toy =h+r=6+3.5=9.5cm
Surface area of hemisphere =2π(3.5)
2
=77cm
2
Cost =Rs.770
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