A triangular sign has base 15 dm and height 9 dm. What is its area?
Note
Use the triangle area rule: half of base × height. First 15 × 9 = 135, then half is 67.5 dm².
A triangular sign has base 15 dm and height 9 dm. What is its area?
Use the triangle area rule: half of base × height. First 15 × 9 = 135, then half is 67.5 dm².