Question

3. Find the area of the isosceles triangle whose: (i) each of equal sides is 8 cm and the base is 9 cm. ha aaual cidos is 10 cm and the base is 12 ha​

Answer 1

Answer:

S=

2

a+b+c

=

2

8+8+9

=12.5

By Heron's formula

Δ=

s(s−a)(s−b)(s−c)

=

(12.5)(3.5)(4.5)(4.5)

=29.765cm

2

.