Question

A=1/2 bh
find A ,if b=20,h=10​

Answer 1

Answer:

b = 20

h = 10

A = 1/2 × bh

= 1 × 20 × 10

__

2

= 10 × 10

= 100

Ans. 100 sq unit

Hope it helps.

Answer 2

• As per the data given in the question, we have to find the area of the right-angle triangle.

        Given data- Base=20.

                            Height=10.

        To find:- The area of the right-angle triangle.

        Solution:-

• In a right-angled triangle, one of the angle is 90 degree.
• In a right-angled triangle, the hypotenuse is the largest side. which is always the side opposite to the right angle.
• To find the base, we will use pythagoras theorem. $l^{2}+b^{2}=h^{2}.$
• The perimeter of a right triangle is the sum of the measures of all three sides.      
• The area of a right triangle is 1/2 × base × height.

        $\Rightarrow A=\frac{1}{2}\times base\times height.$ equation(1)

        Put the value of base and height in equation(1). we get,

        $\Rightarrow \frac{1}{2}\times20\times10\\\Rightarrow 100.$

        Hence, the value will be 100.