1==125
4==500
A:B=3:2
5==500
3==300
Diesel =300*3/4 =225✔

2 × 22/7 × R × h = 1980
R × h = 315

22/7× 315 × r = 6930
R = 7

2× 22/7× 7 = 44

1980/44= 45

Perimeter= 2( 44+45)= 178 cm

16m × 8 = 2f × 24
m : f = 3 : 8

[(8•3+2•8)24×1.5]/ (40•3+45•8)

= 1440/480 = 3 days

Iski approach ?

6 : 7 )6
6 : 7 )7
___________
36 : 42 : 49
49==5880
1==120
36==4320
P*1/6 =4320
P=25920✔

3/4 5/8
k
4. 1

3+5/8= 5
29/40= k

29/40. 5/8
N
1. 3

29/40+15/8= 4n

104/160= n
104:56
13:7✓

(x - y + z) : (y - z + 2w) : (2x + z - w) = 2 : 3 : 5

x = 5 - 2w
y = 3w - 2
z = 5w - 5

3x + 3z - 2w : w
3( 5- 2w) + 3(5w -5) - 2w : w
15 - 6w + 15w - 15 - 2w : w
7w : w = 7 : 1

25 : 28
5 : 6
4 : 5
-----------
500 : 840

500 == 12500
340 == 8500 (satisfied)

So, Rate = 20%

25 : 28
5 : 6
4 : 5
-----------
500 : 840

500 == 12500
340 == 8500 (satisfied)

So, Rate = 20%

2/3π(R³ -r³ )= 342π
R³ -r³ = 513
R³ = 513+216
R= 9
9-6= 3
Surface area= 2• π• 81= 162π

M w
9 5)*7 == 63 35
7 6)*9 == 63 54

19 == 19
98 == 98
98+84 == 182