Question

how to find areas of;
1) triangle
2) square
3) circle
4) rectangle
and others you know​

Answer 1

Answer:

1 ) 1/2bh

2) a²

3) pi*r²

4)lxb

hope it helps have a nice day

Answer 2

Step-by-step explanation:

a) area of triangle

1) scalene triangle =

• $\sqrt{s(s - a)(s - b)(s - c)}$

where s = semi perimeter of triangle

2) equilateral triangle =

$\frac{ \sqrt{3} }{4} a ^{2}$

where a is the side of the equilateral triangle

3) right angled triangle =

$\frac{1}{2} \times ab$

where a and b are sides other than hypotenuse

b) area of square

b) area of square =

$side ^{2}$

c) area of rectangle

$length \times breadth$

d) area of circle

$\pi {r}^{2}$

✓ EXTRA INFORMATION

area of semi circle

$\frac{1}{2} \pi {r}^{2}$