Question

Perimeter of the rectangle in the figure is 36 cm ac= √164
a)what is AB+AC
b)find the length of AB

Answer 1

Answer:

5

x

−2=6

\frac{x - 10}{5} = 6

5

x−10

=6

x - 10 = 30x−10=30

x = 40x=40

Answer 2

First thing is that , you dont mention figure here.. but no problum lets try.....

→ Perimeter of rectangle = 36 cm

→ 2 ( L + B ) = 36

→ L + B = 18 ........(1)

IN ∆ ADC, by pyrhagores theoreme ;

→ AC² = AD² + DC²

→ (√164)² = L² + b²

→ 164 = l² + (18 - L)²

AFTER SOLVING, WE GET ;

→ L² - 18L² - 80 = 0 [ you will get an atchement in which solution is given ]

→AFTER SOLVING THIS ,{DONT WORRY I WILL SHOW YOU IN IMAGE SOLUTION}

→ L = 10 cm & 8 cm.

NOW YOU CAN EASILY DO THE REST..