Question

10
5
15
1.48 The perimeter of a rectangle field is 280m. If its length is 85m, find its breadth.
.49 Solve 7(25 - m) - 2m = 2(2m - 25).
50 Find the area and perimeter of rectangle whose length and breadth are 21 cm and 5
respectively.
51 The following table show the favourite sports of 200 students of a school:
Sports
Badminton Tennis
Football Cricket Swimming
No. of students 25
45
25
30
75
Represent the data by a bar graph.​

Answer 1

Step-by-step explanation:

48) perimeter=2*(l+b)

280=2*(85+b)

280/2= 85+b

140-85=b

55=b

49) 7(25-m)-2m=2(2m-25)

= 7*25-7m-2m=4m-2*25

=175-9m=4m-50

=175+50=4m+9m

=225=13m

=m= 225/13

50) l=21; b=5

area= l*b= 21*5=105cm^2

perimeter=2*(l+b) = 2*(21+5)

=2*26= 52cm