20 cm x 15 cm = 300 cm2
- 1.3
The length is 20 cm.
3/4
Let the breadth be x and the length be x+20 So: 2*(x+x+20) = 100 => 4x+40 = 100 => 4x = 100-40 => 4x = 60 => x = 15 The dimensions are: length = 35 cm and breadth = 15 cm Check for perimeter: 2*(35+15) = 100 cm
15/20=3/4
The ratio is 15:1Here's why:1 cm = 10 mm, so 120 cm = 1200 mm1200/80 = 15/1
The ratio is 3 to 4
1:4
20 cm x 15 cm = 300 cm2
20 cm is 15 pence
The ratio is: 3 to 4
It is 15/100 = 3/20.
15:100 = 3:20
20 cm times 15 cm = 300 square cm
Since 1.5 cm = 10 mm, the ratio would be 1:15 ■
Multiply 20 x 15 x 78 = 23400 cubic cm = 1428 cubic inches