Question

2. A door of length 4 m and breadth 3 m is fitted in a wall. The length of the wall
is 16 m and the breadth of the wall is 13 m 9 cm. Find the cost of whitewashing the wall at the rate of 20 per m.​

Answer 1

Answer:

4208

Step-by-step explanation:

given that

length of the wall 16m

breadth of the wall 13.9m

length of the door 4m

breadth of the door 3m

we know that

the volume of wall

=legnth×breadth

=16×13.9m

=222.4

again

given that

cost of whitewashing the wall per m =20

therefore

cost of whitewashing the hole wall,

=(volume of wall - volume of door)×20

={222.4-(4×3)} ×20

=(222.4-12)×20

=210.4×20

=4208

Answer 2

Answer:

Ok understand,.............

*understood