Question

the floor of a rectangular hall has a perimeter of 250m. If its height is 6m, find the cost of painting its four walls at the rate rupees 20 per m²​

Answer 1

$\huge\red\bigstar$QUESTION:-

the floor of a rectangular hall has a perimeter of 250m. If its height is 6m, find the cost of painting its four walls at the rate rupees 20 per m².

$\huge\red\bigstar$ANSWER:-

GIVEN:-

• rectangular hall has a perimeter of=250m.
• height=6m
• its four walls at the rate rupees 20.

CALCULATION :-

$\implies$ Perimeter of rectangle 250=2(L+B)................ (1)

$\implies$ ° .° area of four walls=2(l+b)h

$\implies$ we know that,

$\implies$ value of 2(l+b)=250.

$\implies$ .°. AREA OF FOUR WALL=2(L+B)H .....(FROM ACCORDING TO EQ. 1)

.°.AREA OF FOUR WALLS=250×6

$\implies$ .°. AREA OF FOUR WALLS=1500m².

hence,

$\implies$ cost of painting =rate ×area of four wall walls.

$\implies$ .°.cost of painting =20×1500

$\implies$ .°.cost of painting =30000rs.

$\huge\red\bigstar$THANKS.

Answer 2

Answer:

6m

Step-by-step explanation:

250h×10=15000

h=15000/250×10

h=6