First you have to do the ones in the brackets
That sucks that that happened... let me know if i can answer any of your questions, i always try to provide a source in my answers:)
Answer:
K=27
Step-by-step explanation:
the answer is 27
Answer:
![(21in,30in)=>210in^2](https://tex.z-dn.net/?f=%2821in%2C30in%29%3D%3E210in%5E2)
![(15in,18in)=>90in^2](https://tex.z-dn.net/?f=%2815in%2C18in%29%3D%3E90in%5E2)
![(15in,30in)=>150in^2](https://tex.z-dn.net/?f=%2815in%2C30in%29%3D%3E150in%5E2)
Step-by-step explanation:
Required
Match the expressions on the left with the right
(a) 21 in by 15 in
Calculate area
![Area = 21in * 15in](https://tex.z-dn.net/?f=Area%20%3D%2021in%20%2A%2015in)
![Area = 315in^2](https://tex.z-dn.net/?f=Area%20%3D%20315in%5E2)
Multiply by ![1/3](https://tex.z-dn.net/?f=1%2F3)
![1-third = 315in^2 * \frac{1}{3}](https://tex.z-dn.net/?f=1-third%20%3D%20315in%5E2%20%2A%20%5Cfrac%7B1%7D%7B3%7D)
![1-third = 105in^2](https://tex.z-dn.net/?f=1-third%20%3D%20105in%5E2)
Hence:
![(21in,15in)=>105in^2](https://tex.z-dn.net/?f=%2821in%2C15in%29%3D%3E105in%5E2)
(b) 21 in by 30 in
Calculate area
![Area = 21in * 30in](https://tex.z-dn.net/?f=Area%20%3D%2021in%20%2A%2030in)
![Area = 630in^2](https://tex.z-dn.net/?f=Area%20%3D%20630in%5E2)
Multiply by ![1/3](https://tex.z-dn.net/?f=1%2F3)
![1-third = 630in^2 * \frac{1}{3}](https://tex.z-dn.net/?f=1-third%20%3D%20630in%5E2%20%2A%20%5Cfrac%7B1%7D%7B3%7D)
![1-third = 210in^2](https://tex.z-dn.net/?f=1-third%20%3D%20210in%5E2)
Hence:
![(21in,30in)=>210in^2](https://tex.z-dn.net/?f=%2821in%2C30in%29%3D%3E210in%5E2)
(c) 15 in by 18 in
Calculate area
![Area = 15in * 18in](https://tex.z-dn.net/?f=Area%20%3D%2015in%20%2A%2018in)
![Area = 270in^2](https://tex.z-dn.net/?f=Area%20%3D%20270in%5E2)
Multiply by ![1/3](https://tex.z-dn.net/?f=1%2F3)
![1-third = 270in^2 * \frac{1}{3}](https://tex.z-dn.net/?f=1-third%20%3D%20270in%5E2%20%2A%20%5Cfrac%7B1%7D%7B3%7D)
![1-third = 90in^2](https://tex.z-dn.net/?f=1-third%20%3D%2090in%5E2)
Hence:
![(15in,18in)=>90in^2](https://tex.z-dn.net/?f=%2815in%2C18in%29%3D%3E90in%5E2)
(d) 15 in by 30 in
Calculate area
![Area = 15in * 30in](https://tex.z-dn.net/?f=Area%20%3D%2015in%20%2A%2030in)
![Area = 450in^2](https://tex.z-dn.net/?f=Area%20%3D%20450in%5E2)
Multiply by ![1/3](https://tex.z-dn.net/?f=1%2F3)
![1-third = 450in^2 * \frac{1}{3}](https://tex.z-dn.net/?f=1-third%20%3D%20450in%5E2%20%2A%20%5Cfrac%7B1%7D%7B3%7D)
![1-third = 150in^2](https://tex.z-dn.net/?f=1-third%20%3D%20150in%5E2)
Hence:
![(15in,30in)=>150in^2](https://tex.z-dn.net/?f=%2815in%2C30in%29%3D%3E150in%5E2)