Question
A rectangle has a perimeter of 160 cm. Its breadth is 40%
less than its length. Calculate the area (in cm²) of a square whose side is 20 cm shorter than the length of the rectangle.Solution
ATQ,
Let the length of the rectangle be '5y' cm
Breadth of the rectangle = (3/5) × 5y = '3y' cm
So, 2 × (5y + 3y) = 160
Or, 8y = 80
Or, 'y' = 10
Length of rectangle = 5 × 10 = 50 cm
Side of the square = 50 - 20 = 30 cm
Therefore, area of the square = (side)² = 30² = 900 cm²
- What will come in place of (?), in the given expression.
(56 × 3) + (480 ÷ 6) = ? 40% of 220 × 15 ÷ 20 = ?
Simplify the following expressions and choose the correct option.
(3/4 of 528) − (2/3 of 135) = ?
√ (12+√ (12+√ (12+ ⋯ ∞ ))
34 × 2.5 + 6.4 × 1.5 – 4.8 × 1.2 =?
{(81% of 800 + 28 × 4) – 27 × ?} = 11 × 20
What should come in place of (?) question mark in the given expression.
[60% of 350 + (2/7 of 210)] ÷ 5 = ?
What will come in the place of question mark (?) in the given expression?
24% of 350 + 246 = ? + 50 × 2.5
Find the simplified value of the given expression:
7 of 9 ÷ 3 × 5² + √81 – 14Find the value of 'p' in the given expression: 15 of 6 ÷ p x 4 = 30.
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