Question

Find the area of the parallelogram. HELP ASAP!!

Answer 1

Answer:

A) 300 cm2

Step-by-step explanation:

First you have to find height

use Pythagorean theorem: a2 + b2 = c2

$h^{2}+ 8^{2} = 17^{2}$

h2 + 64 =289

h2 = 289-64

h2 = 225

h= 15

now the area

A = a * h

A = 20 * 15

A = 300 cm2

Answer 2

Answer:

$\large\boxed{A=300\ cm^2}$

Step-by-step explanation:

The formula of an area of a parallelogram:

$A=bh$

b - base

h - height

Use the Pythagorean theorem to calculate a height h:

$h^2+8^2=17^2$

$h^2+64=289$            subtract 64 from both sides

$h^2=225\to h=\sqrt{225}\\\\h=15\ cm$

Calculate the area:

$A=(20)(15)=300$