Please answer this correctly

Step-by-step explanation:

Area = area of triangle + area of rectangle 1 +  area of rectangle 2 + area of rectangle 3

= (1/2)*10*20 + 9 * 14 + 21* 3 + 5*7

= 100 + 126 + 63 + 35

= 324 sq.in

7! = 7×6×5×4×3×2

3! = 3× 2

as 7! is multiple of 3! because 7! contains 3! that is 3× 2 as factor

so 7! /(3! ) = 7× 6× 5× 4

= 42 × 20

= 840

its b) 840✌✌✌

dhruv⭐

a

step-by-step explanation: