Question

the base of an isosceles triangle having thr base 16cm.if its perimeter is 36cm, find the area?​

Answer 1

Answer:A

=

48cm²

Step-by-step explanation:

Answer 2

Answer:

48

Step-by-step explanation:

isosceles triangle haveing base 16 then the two equal side are 2a

2a+16=36 perimeter

2a=20

a=10

the height drawn to the base is eqaul to

$h = \sqrt{( {a}^{2} - {(\frac{base}{2})}^{2} } ) \\ = \sqrt{ {10}^{2} - { (\frac{16}{2} })^{2} } = \sqrt{100 - 64 } \\ = \sqrt{36} = 6 \\ \\ area \: o \: triangle \: is \: = \frac{1}{2} height \: \times base \\ \frac{1}{2} \times 6 \times 16 = 6 \times 8 = 48$