Question
If the area of a triangle is 1350 cm2 and
base: corresponding altitude is 3:4, then the altitude of the triangle is:Solution
Using the formula, Area of the triangle = 1/2 x base x height Let the base and altitude be 3x and 4x respectively. According to question, ⇒ 1/2 x base × altitude = 1350 cm2 or, ⇒ 1/2 x (3x) x (4x) = 1350 ⇒ 12x2 = 2700 ⇒ x2 = 2700/12 ⇒ x2 = 225 ⇒ x = √225 ⇒ x = 15 cm Altitude of a triangle = 4x = 4 × 15 cm = 60 cm
6 0 - 20 [8 + 12 {8-8 (20-12)+20}-40] ÷ 16 =?
Simplify the following expressions and choose the correct option.
[(13)² − (9)²] × (5/8) = ?
(25 × 12 + 30 × 8 – 22 × 10) = ?
√1764 + 35 × 8 + 39 = ?2
If a nine-digit number 389x6378y is divisible by 72, then the value of √(6x + 7y) will be∶
72 – 4(40 + 24 ÷ 6 × 6 – 4 × 4) + 40
36% of 250 – 18% of 200 = 30% of ?
32 of (16/8) of (30/24) of (120/x) = 30
- What will come in place of (?), in the given expression.
(81 ÷ 9) + (121 ÷ 11) + (64 ÷ 8) = ? Simplify:
0.48 ÷ 0.06 + 0.75 × (4/5)
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