The area of a right triangle, whose base is 12 cm, is 169cm . Find the cost of levelling the field at 90 paise per m. [ MENSURATION]
Answers
Step-by-step explanation:
area of triangle =1/2*base *height
169 = 1/2*12 *height
so, height =28.16.
cost of leveling the field =28.16*90 =2534.40
so it's helpful for us
thanks
Given:
✰ Base of a right triangle = 12 cm
✰ Area of a right triangle = 169 cm²
To find:
✠ Find the cost of levelling the field at 90 paise per m.
Solution:
Let's understand the concept! First we will convert area of a right triangle into metre square, then we will find the cost.
Let's find out...♪
⟹ 1 cm = 1/100 m
⟹ 169 cm = 169/100 m
⟹ 1.69 m
➛ The cost of levelling the field per metre = 90 paise
➛ The cost of levelling the field per 1.69 m = 90 × 1.69
➛ The cost of levelling the field per 1.69 m = 152.1 paise
∴ The total cost of levelling the field = 152.1 paise
What if we need to find height also?
We will find height by using the formula of area of triangle. As we are already provided with the area. Thus, forming an adequate equation and doing required calculations, we can easily find out the height of a triangle.
✭ Area of triangle = 1/2 × base × height ✭
➤ 169 = 1/2 × 12 × h
➤ 169 = 6 × h
➤ h = 169/6
➤ h = 28.16
∴ The height of a right triangle ≈ 28.2 cm
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