50 points if allowed !! Calculate the area of a rhombus if its base is 10 cm and height is 7 cm.
There are three ways to calculate the area of a rhombus what are they for all the points, please show workings for brainliest?

A rhombus is actually just a special type of parallelogram. Many of the area calculations can be applied to them also. Choose a formula based on the values you know to begin with.

1. The "base times height" method

First pick one side to be the base. Any one will do, they are all the same length. Then determine the altitude - the perpendicular distance from the chosen base to the opposite side. The area is the product of these two, or, as a formula:

area=ba  

where

b is the length of the base

a is the altitude (height).

Use the calculator below to calculate the area of the rhombus given the base (side) length and altitude (perpendicular height).

Enter any two values and the missing one will be calculated. For example, enter the area and base length, and the height needed to get that area is calculated.

Step-by-step explanation:

e^-kt = n/n0 = 0.79  

-kt = ln 0.79  

t = - ln 0.79/0.0001  

= 2357 years

step-by-step explanation: