Question

Q21. A barn is an agricultural building usually on farms and used for various purposes. A

barn refers to structures that house livestock, including cattle and horses, as well as

equipment and fodder, and often grain.

Ramkaran want to build a barn at his farm. He has made a design for it which is shown

above. Here roof is arc of a circle of radius r at centre O.

(i) What is the value of radius of arc ?

(a) 4√ m (b) 4 √ m (c) 2√ m (d) 2√ m


(ii) What is the curved width of roof ?

(a) 2 Π√ m (b) 4Π√ m (c) 2Π√ m (d) 4 Π√ m


(iii) What is area of cross section of barn ?

(a) 8 (6+Π)m2

(b) 4( 6+Π )m2

(c) 8 (3+Π )m2

(d) 4 (3+Π)m2


(iv) If the length of the barn is 12 meters, what is the

(a) 32 √ Π m2

(b) 16√ Πm2



(c) 48 √ Π m2



(d)24√ Πm
2​

Answer 1

Answer:

c one is the answer okkkkkkkkkkkkkkkk

Answer 2

Answer:

option C is the correct answer

it's true

hope it helps