Question

The area of ΔABC is:
a) 20 cm2
b) 10 cm2
c) 4√5 cm2
d) 2√5 cm2​

Answer 1

Answer:

option d is the right answer

Step-by-step explanation:

2√5

Answer 2

d) 2√5 cm2²

Step-by-step explanation:

Semi perimeter of triangle(S) =

$\frac{a + b + c}{2}$

here , a ,b and are the sides of the triangle which are 3cm , 3cm and 4 cm .

S =

$\frac{3 + 3 + 4}{2}$

$s = \frac{10}{2}$

= 5 .

Area of Triangle

$= \sqrt{s(s - a)(s - b)(s - c)}$

$= \sqrt{5(5 - 3)(5 - 3)(5 - 4)}$

$\sqrt{5(2)(2)(1)}$

$= \sqrt{20}$

$= 2 \sqrt{5} cm {}^{2}$

$\sf\red{hope\:it\:helps\:you}$