Question

The area of an isosceles triangle having base 4 cm and some of the other two sides is 10 cm

Answer 1

Step-by-step explanation:

herons formula:

semi perimeter=a+b+c/2

a=4;b=10;c=10

s=a+b+c/2

s=4+10+10/2

s=24/2

s=12

=√s(s-a)(s-b)(s-c)

1. s-a=12-4=8
2. s-b=12-10=2

3. s-c=12-10=2

=√12(8)(2)(2)

=2√12(8)

=2√4×3×4×2

=2×2×2√3×2

=8√6cm^2