Answer:
Option C - 70 cm²
Step-by-step explanation:
Area of a right angle triangle is given by the formula :
A = 1/2×h×b
A = 1/2×7×4
A = 1/2×28
A = 14
This is the area of 1 right angle triangle. The area of 5 will be
14×5 = 70
Units will be cm²
Hope this helped and have a good day
