We are going to do problem number 47. And this question, what we have to do is we have to find the area off black part that is Syria. Let us assume that black participated portion, and we have to just find that area. So for that, what we will be doing is a vegetable letter side The dimension, the dimension off inner part inner rectangle is 18 inches. Uh, I'm telling me, just okay. 18 inches and 13 in just on the dimension off this bigger rectangle. It was 20 inches on the subscription inches. So for area of the certain portion, what we will be doing is that's right. Area off black part of shaded portion. Okay, black part. This will be equals toe live this idea area off. Bigger, bigger rectangle. We got rectangle manners area off a smaller rectangle. Smaller a rectangle. Okay, so I just started this area off. Bigger rectangle will be both. What is the dimension off? Bigger One that is 20 into 15 area will be 22 15. This is in what is the unit unit into the squad over there. Manus area off a smaller rectangle. So the dimension off in Organist. 13 into 18. Into the square, into the square. Okay, so let us go create. It is concluded. The area. So 20 into 15 this will be equals to 300. 300. Manage. Starting in. Do 18. Okay, 13 into 18. So this will be called 234 on. The whole unit will be off into the square, dick. So from here, we will be having the area off certain portion. Toby, uh, tense for your six and 936 Okay, nine. Ministry is six on, uh, two ministers, zero. So we'll have 66 inches. The square. So from here, what we get, we get that area off certain portion or we can say black part idea. Absurd are black. Portion black portion is equals 2 66 inches square. So this is our answer, That's all. Thank you.