Question
Calculate the perimeter of a square when the area of a
circle that circumscribes it is 486 square centimeters. (Assume π = 3 for calculations.)Solution
ATQ, Let radius of the circle is ‘r’ cm. So, πr 2 = 486 Or, r 2 = 162 Or, r = 9√2 So, diameter of circle = diagonal of square Or, √2 × side of square = 2 × 9√2 So, side of square = 18 Perimeter of square = 4 × side = 4 × 18 = 72 cm
More Mensuration Questions
- Find the value of the expression:
40 + 5 – 7 × [16 + 9 – 3 × (27 – 13)] 8 × (25 % of 720) – 50 % of 135 % of 840 = ?
- What will be come in place of (?) in the given expressions.
(3/4 of 480) – (2/5 of 350) = ? - What will come in place of (?), in the given expression.
√2025 + 35% of 400 = ? 
13/3 – (23/6) = ? – (22/9)
(1296)Â -3/4Â = ?
- What will come in the place of question mark (?) in the given expression?
?² = 28% of 35% of 4500 What will come in the place of question mark (?) in the given expression?
(72 × 6 ÷ 12) × 6 = ?
What will come in the place of question mark (?) in the given expression?
? = 70% of 36% of (25 × 320) + 150
