A rectangular park is 50m long and 35m broad.A 3.5m broad pavement runs along the boundary of the park .Find the cost of cementi
ng this pavement at the rate of 400 per 8m sq
2 answers:
Answer:
$29,750
Step-by-step explanation:
Area (pavement) = 2 x 3.5(50 + 35)
= 7 x 85
= 595 sq. m.
Cost
= 400 per 8. sq. m.
= 50 per sq. m.
=> 595 x 50
=> $29.750
Solution:
<u>Step-1: Find the area of the park.</u>
- 50 x 35 = Area of park
- => 1750 m² = Area of park
<u>Step-2: Find the area of the inside rectangle.</u>
- (50 - 7)(35 - 7) = Area of inner park
- 43 x 28 = Area of inner park
- 1204 m² = Area of inner park
<u>Step-3: Subtract the area of the inner park from the area of the park.</u>
- 1750 - 1204 = Area of pavement
- => 546 m² = Area of pavement
<u>Step-4: Find the cost per square.</u>
<u>Step-5: Multiply 546 and 50 to find the cost.</u>
- 546 x 50 = Cost of pavement
- => $27300 = Cost of pavement
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Answer:
The first option.... The one with the blue dot I guess you have chosen that
Wouldn't it be answer b)?
That would be 5x-5 because the number inside is multiplied by the numbers inside due to the brackets. Hope u understand my explanation.
A+b=6.1 ---(1)
a-b=1.6 ---(2)
(1)+(2); 2a=7.7
then a=3.85
so b=a-1.6 = 3.85-1.6 = 2.25
so that the two numbers are 2.25 and 3.85
