Question:
The diagram shows a right -angle and a parallelogram. The area of the parallelogram is 5 times the area of the triangle. The perpendicular height of the parallelogram is h. Find h
Answer:
![h =12cm](https://img.qammunity.org/2022/formulas/mathematics/high-school/pj0apyglz3hesgrfbr0zhsrnv6rauazdaw.png)
Explanation:
Given
Triangle
![Base = 9cm](https://img.qammunity.org/2022/formulas/mathematics/high-school/nyeimizko8q3pna2daq7qga2s57c2au3ce.png)
![Height = 16cm](https://img.qammunity.org/2022/formulas/mathematics/high-school/1nl8imm1bth8wufkg5nrh3pm7bst9ejp82.png)
Parallelogram
![Base = 30cm](https://img.qammunity.org/2022/formulas/mathematics/high-school/2zjte7393xx8a11eqd4ay4zjh6r99pk19p.png)
![Height = h](https://img.qammunity.org/2022/formulas/mathematics/college/c4ugclzi3ntygmmgfb6nh9nhxf6zkpiyd8.png)
Calculate the area of the triangle
![Area = 0.5 * Base * Height](https://img.qammunity.org/2022/formulas/geography/high-school/eyoqmx1dbjhtewn0zwp0v84300pbs71cq5.png)
![Area = 0.5 * 9cm * 16cm](https://img.qammunity.org/2022/formulas/mathematics/high-school/6wze16qsmfkb45usro6wx0vz2pm9hibzod.png)
![Area = 72cm^2](https://img.qammunity.org/2022/formulas/mathematics/high-school/7e4xpg7piaiet9jtltpdw12sva7c85l8h9.png)
When multiplied by 5, gives the area of the parallelogram.
So:
The area of Parallelogram is:
![Area = Base * Height](https://img.qammunity.org/2022/formulas/mathematics/high-school/o3apjpciurla87jlyxxgvuleo474a5xa1f.png)
![Area = 30cm * h](https://img.qammunity.org/2022/formulas/mathematics/high-school/xqzdaa3zaaqbbw0xj82g2z5h8pt4oymqvi.png)
This gives:
![30cm * h = 72cm^2 * 5](https://img.qammunity.org/2022/formulas/mathematics/high-school/te8j399wo3bhpd3v9w2xmoiysatshq4vm8.png)
Make h the subject
![h = (72cm^2 * 5)/(30cm)](https://img.qammunity.org/2022/formulas/mathematics/high-school/epk722aex6n9ozb8xr4al9j1jez4bg1tpw.png)
![h = (72cm^2)/(6cm)](https://img.qammunity.org/2022/formulas/mathematics/high-school/9wm3fkjqwf8u82ilef9ayuyeug5sq4hpnz.png)
![h =12cm](https://img.qammunity.org/2022/formulas/mathematics/high-school/pj0apyglz3hesgrfbr0zhsrnv6rauazdaw.png)