Question

In an isosceles right-angled triangle with each of the congruent sides measuring 7cm. The perimeter of an isosceles triangle is -
A- 8cm
B- 16cm
C- 6cm
D- 8√2

Answer 1

Answer:

use Pythagoras thereom

h=7²+7²

h=49+49

h²=198

square root of 198

7√2

find perimeter

=7(2+√2)