The perimeter of a circle=πr², where π=22/7. find the area of r=21cm
1 answer:
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Note: Consider x be the breadth of the box.
Given:
The surface area of the box is 204.25 square feet.
Length of the box = 10 ft
Breadth of the box = x ft
Height of the box = 6.5 ft
To find:
The value of x.
Solution:
The surface area of a cuboid is:
Where, l is length, b is breadth and h is height of the cuboid.
Putting in the above formula, we get
Using distributive property, we get
Divide both sides by 33.
Therefore, the correct option is B.