Question

Question 19 of 28

Which of the following equations can be used to find the length of BC in the
triangle below?
B
10
А
30
с
A. BC = 30 + 10
B. (BC)2 = 102 + 302
C. BC = 30 - 10
D. (BC)2 = 302 - 102

Answer 1

BC^2=10^2+30^2

Explanation:

• P=10
• B=30

Using pythagorean theorem

`\\ \sf\longmapsto BC^2=10^2+30^2`

`\\ \sf\longmapsto BC^2=100+300`

`\\ \sf\longmapsto BC^2=400`

`\\ \sf\longmapsto BC=√(400)`

`\\ \sf\longmapsto BC=20`