Everything has been explained in there
By utilizing 3-dimensional geometry instead of 2-dimensional geometry.
Hope it helps!
Let the another number is x
And the sum of number is 30
And the one number is 23
x+23=30
x=30-23
x=7
the another number is 7
<em><u>Hi!</u></em>
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The equation for finding the <em>AREA </em>of a<em> TRIANGLE </em>is simply: half times base times height, or, 1/2xbxh.
The base here is 6
The height here is also 6
Substitute these values into the formula!
1/2 * (6) * 6)
Multiply!
1/2 * 36.... (6 * 6 = 36)
1/2 * 36 = 18
So, the triangle is 18 sq. units!