Answer:
Area, 199.5, Perimeter, 46.45
Explanation:
1. Decompose it into 2 shapes; rectangle and triangle
2. Find the area of the triangle; 10cm×7.6cm=76×1/2=38
3. Find the area of the rectangle; 21.25cm×7.6cm=161.5
4. Add the products 38+161.5=199.5
Perimeter:
1. Decompose it into 2 shapes; rectangle and triangle
2. Find the perimeter of the triangle; 10cm+7.6cm=17.6
3. Find the perimeter of the rectangle; 21.25+7.6=28.85
4. Add the sums 17.6+28.85=46.45