Question

help help i will give brainliest please look at picture

Answer 1

Answer:

B

Step-by-step explanation:

not completely sure that's right sorry if its Wong

Answer 2

Answer:

Your answer is right, it is 343cm

Step-by-step explanation:

$14 \times 21 = 294 \\ 28 - 21 = 7 \\ (7 \times 14) \div 2 = 49 \\ 294 + 49 = 343$