18. A farmer Ramesh grows a corn cob in his farm Com cob contains valuable vitamin B, antioxidants.
carotenoids, lutein and zeaxanthin which are useful for body grow.
A corn cob (above figure). Shaped somewhat like a cone, has the radius of its broadest end as 2.1cm and
length as 20cm. Then, answer the following questions, which are based on above data.
48
Slant height of conical corn cob is
a) 19.11 cm
20.11 cm
c) 18.11 cm
d) 21.11 cm
1) The formula to find the curved surface area of cone is
a) pie×r^2×h
b)pie×r×l
c) 2×pie×r×h
d) 2×pie×r(r+h)
Curved surface area of the corn cob is (in cm^2)
a) 132.73
b) 122.73
c) 112.73
d) 102.73
IV)
If each 1 cm^3 of the surface of the cob carries an average of four grains then how many grains
you would find on the entire cob?
a) 532
b) 531
c) 432
d) 431
The formula to find out the total surface area of cone is
by a)pie×r^2h
b) pie×r(l+r)
c)2×pie×r×h
d)2×pie×r(r+h)
pls answer..
Answers
18. A farmer Ramesh grows a corn cob in his farm Com cob contains valuable vitamin B, antioxidants.
carotenoids, lutein and zeaxanthin which are useful for body grow.
A corn cob (above figure). Shaped somewhat like a cone, has the radius of its broadest end as 2.1cm and
length as 20cm. Then, answer the following questions, which are based on above data.
48
Slant height of conical corn cob is
a) 19.11 cm
20.11 cm
c) 18.11 cm
d) 21.11 cm
1) The formula to find the curved surface area of cone is
a) pie×r^2×h
b)pie×r×l
c) 2×pie×r×h
d) 2×pie×r(r+h)
Curved surface area of the corn cob is (in cm^2)
a) 132.73
b) 122.73
c) 112.73
d) 102.73
IV)
If each 1 cm^3 of the surface of the cob carries an average of four grains then how many grains
you would find on the entire cob?
a) 532
b) 531
c) 432
d) 431
The formula to find out the total surface area of cone is
by a)pie×r^2h
b) pie×r(l+r)
c)2×pie×r×h
d)2×pie×r(r+h)