Answer: A=70 square units
Explanation:
The area of a triangle can be found using the formula
![A=(1)/(2) bh](https://img.qammunity.org/2021/formulas/mathematics/middle-school/xeq07jh2ezzvj3f5ni04b1xso0ogehmv33.png)
Let 5=h and 7=b
Plug in the values and solve
![A=(1)/(2) (7)(5)](https://img.qammunity.org/2021/formulas/mathematics/middle-school/fpklnvoc191xxh7528ns2gzxwjipe4ck68.png)
![A=17.5](https://img.qammunity.org/2021/formulas/mathematics/middle-school/vm50giulhqj8m2u8taxlq58oh221g3o4op.png)
However, since four of these triangles make up this rhombus, we can multiply the area of one of these triangles by four to find the area of the whole rhombus.
![A=17.5*4](https://img.qammunity.org/2021/formulas/mathematics/middle-school/znw50ojz4eypoqwni81j7xmcfpem6tk4z0.png)
![A=70](https://img.qammunity.org/2021/formulas/mathematics/middle-school/e2ys1p9bofqbr6dvadadqexikp8e5hyn2c.png)