The ratio between the base and height of a right angled triangle is 4:5 respectively. If the area of the right angled triangle is 80 sq cm, what is the height of the triangle?
Let the base and height of a right angled triangle be 4x and 5x respectively.
By formula,
Area of right angled triangle = ½×Base ×Height
80=½ ×4x × 5x
x2 = 8
x = 2√2cm
∴ Height = 5x = 5× 2√2cm
= 10√2cm
One- fourth of two-fifth of 30 percent of a number is 15. What is 20 percent of that number ?
Directions (Next Five Questions) : What approximate value will come in place of the question mark(?) in the given questions ? (you are not expected to calculate exact value)
12.95×7.05+85.012×10.99=?
17.992-14.052+(2343.75+81.55)÷?=229
423.62-269.21+(11.9% of 78)=?
3/5 of 7/19 of 15/28 of 543=?
