Question

the sides of a triangle are 7 upon 2 CM 11 upon 4 cm and 16 upon 5 cm find its perimeter​

Answer 1

Answer:

(21√2)/8

Step-by-step explanation:

Area of a triangle =1/2*base*height

base=7/2cm

height=√(11^2/4^2)-(7^2/4^2)

=√(121-49)/16

=√72/16

=√(9*2*4)/16

=3√2/2

Area=1/2*(7/2)*(3√2/2)

=21√2/8