Question

Please help me :((( it’s geometry

Answer 1

`\tt Step-by-step~explanation:`

`\tt Area:`

To solve for the area of a triangle, we multiply the length and height, then divide that by two. L = 10. H = 7.

`\tt 10*7=70\\70/2=35\\35=A`

`\tt Perimeter:`

`\tt Step~1:`

To solve for the perimeter, or edges, of the triangle, we need to use the Pythagorean Theorem: a² + b² = c² to solve for the third side. We already know two measures: 10 and 7. Now we need to square them, add them together to get c², then take the root of that number.

`\tt 7^2=49\\10^2=100\\100+49=√(149)\\\sqrt{149`

We cannot simplify √149, so we either leave it, or round it.

`\tt √(149)\\12.2066`

This is rounded to the nearest 10,000.

`\tt Step~2:`

Now that we have the measure of the longest side, we can add all three sides together to get the perimeter of the triangle.

`\tt 10+7+√(149)=17+√(149)=P\\Rounded~to~the~nearest~1,000th:~29.207=P`

`\large\boxed{\tt Our~final~answer: ~A=35,~P=17+√(149)}`