Question

4. Solve
(a) The blackboard in Suman's classroom is 3 m long and 1.2 m broad. What is the area of
the blackboard? What is its perimeter?
(b) The perimeter of a room is 36 m. If its length is 10 m, find its breadth and its area.
(c) A rectangular mirror is 1.5 m long and 75 cm wide. What is its area?
(d) The perimeter of a square is 16 cm. What is its area?
(e) The breadth of a swimming pool is 2 m shorter than its length. If its length is 10 m, what
is its breadth? What is the area of the swimming pool?
(1) The length of a small garden is three times its breadth. If its breadth is 50 m, what is the
area of the garden?
(g) The area of a curtain is 3 m². If its breadth is 1m, what is its length?
(h) The area of a square handkerchief is 100 cm. What is the measurement of its side?( i )The area of a painting is 375 cm². If its breadth is 15 cm, what is the length of the
painting?​

Answer 1

Answer:

(a) 3x1.2=3.6 sq m. perimeter=2x(l+b) =2x(3+1.2) =8.4 m.

Answer 2

Step-by-step explanation:

ए रैक्टेंगल मिरर इज 1.5 मीटर लोंग एंड 75 मीटर वाइड व्हाट इज दिस एरिया