Find the quantity of concrete required to make 70 cylindrical pillars of radius $5 c m$ and height $10 m$ .

$6.5 m^{3}$

No worries! We‘ve got your back. Try BYJU‘S free classes today!

$5.5 m^{3}$

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

$6 m^{3}$

No worries! We‘ve got your back. Try BYJU‘S free classes today!

$4.4 m^{3}$

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B
$5.5 m^{3}$

Radius of base of cylinder
$= 5 c m$
$= \frac{5}{100} m$

Height of cylinder
$= 10 m$

Volume of 1 pillar
$= π r^{2} h$
$= \frac{22}{7} \times \frac{5}{100} \times \frac{5}{100} \times 10$

Volume of 70 such pillars
$= 70 \times π r^{2} h$
$= \frac{22}{7} \times \frac{5}{100} \times \frac{5}{100} \times 10 \times 70$
$= 5.5 m^{3}$

Suggest Corrections

Similar questions

Q. is the quantity of concrete required to make 70 cylindrical pillars of radius

5 c m

and height

10 m

Q. 70 cylindrical pillars each of radius 10 cm and height 20 m would require

m^{3}

of concrete.

Q. Find the curved surface area (m

^{2}

) of a cylindrical concrete pillar whose radius and height are 70 cm and 10 m respectively.

Q. The pillars of a temple are cylindrically shaped. Each pillar has a circular base of radius 20 cm and height 10 m. How much concrete mixture would be required to build 14 such pillars?

The pillars of the temple are cylindrically shaped. Each pillar has a circular base of radius $20 c m$ and height $10 m$ . How much concrete mixture would be required to build $14$ such pillars?

Join BYJU'S Learning Program

Find the quantity of concrete required to make 70 cylindrical pillars of radius 5 cm and height 10 m.

The correct option is B 5.5 m3 Radius of base of cylinder =5 cm =5100 m Height of cylinder =10 m Volume of 1 pillar =πr2h =227 × 5100×5100×10 Volume of 70 such pillars =70 × πr2h =227 × 5100× 5100×10×70 =5.5 m3

Find the quantity of concrete required to make 70 cylindrical pillars of radius $5 c m$ and height $10 m$ .