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
900mm of paint for all four sides
3n+4 or n3+4
7,10,13,16
they all have a difference of 3
so that's 3n
start with the first one: 3(1)+?=7
7-3=4
3n+4
use this for the other ones to double check
3(2)+4
6+4=10
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